Top all-time · #25931
Jonas Lejon
Personal blog · kryptera.sesecurity
Jonas Lejon writes Cybersäkerhet och IT-säkerhet, a personal blog at kryptera.se about security. Since 2017, 3 different Hacker News readers have linked it 3 times. It is still writing: the last post was on 2026-02-02, and you can follow it by feed.
Too few sampled comments (3) to say how often HN recommends it.?
Why HN links it
HN readers link Jonas Lejon's site for security research and write-ups, including a paper on abusing WPA2 group keys and a post on a cryptomining script that hijacked Swedish government sites.
Summarised by Claude from a sample of 3 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Cybersäkerhet och IT-säkerhet • En blogg om cybersäkerhet av Jonas Lejon
What Hacker News says?
Paper appears to be out [1] [1] "Predicting, Decrypting, and Abusing WPA2/802.11 Group Keys" (PDF) [ https://kryptera.se/assets/uploads/2017/10/usenix2016-wifi.p... ]
Comment linking /assets/uploads/2017/10/usenix2016-wifi.pdf
on “WPA2: Broken with KRACK. What Now?”This illustrates the need of proper vetting of any CDNs you rely on, and integrity-checking all external scripts. The culprit here was BrowseAloud (ba.js), which had been hijacked to mine Monero on visitors browsers. Several Swedish government sites affected as well: https://kryptera.se/t/javascript-miner/ Wired article: http://www.wired.co.uk/article/browsealoud-ico-texthelp-cryp...
Comment linking /t/javascript-miner/
on “Government websites hijacked by cryptomining plugin”That was the month telegram launched? It's been 7 years. It was a new app. The same bug is still being used against it? Do you have any recent bugs? Or 'backdoors'? All their official apps are open source and reproducible. Must be easy to find bugs for security researchers. They even offer much larger bounties compared to other apps. Anything? I want to believe people saying bad crypto, but it looks like there's no…
Comment linking /assets/uploads/2015/12/Telegram-cryptanalysis.pdf
on “Poll: Switching from WhatsApp”