To the OP: Do
not follow advice on HN. Find information from real security experts. Real security is complex, expensive, and difficult.
To the parent: Please don't do this. It is dangerous and irresponsible to advise someone at risk unless you know what you are talking about, and while I wouldn't comment in a casual conversation, in this case it's important to point out that your comment is ignorant and dangerously wrong. It is Internet misinformation that many seem to collect and repeat to each other, which on the Internet gives it a veneer of truth. You wouldn't give medical or legal advice to someone who faced serious health or legal risks unless you were a doctor or lawyer (I hope). What if the OP follows your advice and ends up tortured in prison?
My understanding from actual IT security experts:
Tor Browser might help with mass data collection by businesses like Google, but it's the worst choice for threats by government or by others who have extra-legal powers: First, it signals that you are hiding something; it attracts attention: not everyone using Tor Browser is a dissident, but the proportion of dissidents among the Tor Browser population is much higher than among the Chrome and Safari populations. Second, it is based on a relatively insecure browser, Firefox, and then it is modified by a team that simply lacks the resources to design and implement proper security. Again, security is complex, expensive, and difficult. The obvious tactic for the attacker is to infect every Tor Browser visiting dissident resources.
> Disable javascript whenever possible. Check your browser fingerprint.
If you are using Tor Browser with JavaScript disabled, you've already identified yourself as part of a tiny population. Narrow that to the subset that visits Tunisian dissident websites, and the authorities might know everyone in that population by name.