2026-04-23 22:43 UTC
Fast16 has been a mystery since it was named in the ShadowBrokers leak of NSA tools in 2017: A program that advised agency hackers how to deal with other malware they encountered merely notes for Fast16: "NOTHING TO SEE HERE - CARRY ON," suggesting it was a created by the US or a friendly country.
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@agreenberg@infosec.exchange 2026-04-23 22:43
Only in 2019 did @juanandres_gs@bird.makeup find the actual code for Fast16, which dated all the way back to 2005, through some clever hunting on the malware repository VirusTotal. It took seven more years for anyone to figure out what it actually did.