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RE: Warning about phishing links
Be careful what you are clicking on. If it runs javascript then it can do a great deal on your computer, for example people can even go so far to open a shell on your computer using javascript. This is something that people do often when they exploit xss attacks, but if you are willingly visiting a site then they don't even need to trick you into running the javascript.
You can see more about this type of attack here:
https://www.slideshare.net/BartLeppens/owasp-appseceu-2015-beef-session (See from slide 49)
Thanks for your feedback on my comment!
Awesome stuff again, especially those canary tokens. I'm not sure how exactly it could be implemented, but I can see maybe some sort of interesting key-specific decryption of a picture like they were talking on a website that logs use automatically. Not sure how that would work on attacker's own websites or even Steemit though. Interesting to think about.
And yeah, I even read somewhere that web javascript could exploit those Spectre and Meltdown vulnerabilities. I just love it because it runs so easy... everywhere.