Fast16 Malware

Researchers have reverse-engineered a piece of malware named Fast16. It’s almost certainly state-sponsored, probably US in origin, and was deployed against Iran years before Stuxnet:

“…the Fast16 malware was designed to carry out the most subtle form of sabotage ever seen in an in-the-wild malware tool: By automatically spreading across networks and then silently manipulating computation processes in certain software applications that perform high-precision mathematical calculations and simulate physical phenomena, Fast16 can alter the results of those programs to cause failures that range from faulty research results to catastrophic damage to real-world equipment.”

Another news article.

Lots of interesting details at the links.

Posted on April 30, 2026 at 6:22 AM β€’ 6 Comments

Comments

Anonymous β€’ April 30, 2026 6:26 AM

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Rontea β€’ April 30, 2026 9:38 AM

This discovery underscores a fundamental truth in cyber operations: Attacks that manipulate the integrity of data are far more dangerous than those that merely steal or destroy it. Fast16 represents a class of malware designed to silently degrade trust in the computational results that modern critical infrastructure and research rely on. Unlike Stuxnet’s kinetic sabotage, this tool weaponizes subtletyβ€”its effects could manifest as inexplicable equipment failures or flawed scientific conclusions, all while leaving minimal forensic evidence.

Clive Robinson β€’ April 30, 2026 10:28 AM

@ Bruce, ALL,

With regards,

“It’s almost certainly state-sponsored, probably US in origin”

Does any of that really matter?

The political points scoring along with “might is right” and other political rhetoric is just “fluff”.

What we actually need to know is,

1, “The harms” carried out,
2, “How to recognise/detect” them,
3, “How to stop or mitigate” them.

Because they will hurt the people targeted today. And those targeted in turn will hurt their attackers in revenge as and when they can.

Something history shows us over and over happens regardless of,

1, “The tools used”
2, “The disparity in tool technology or availability”.

Which means a cycle of violence builds up and will go on for a half century or more, as we can currently see… Which in turn will give rise to other such harms being started thus the cycle goes on for centuries if not millennium.

With the only people gaining being “fear mungering politicians with authoritarian behaviour” and those that stand behind them for status and profit. With the rest of all societies being harmed (look at the Irish Troubles that got really nasty under Oliver Cromwell’s authority and how they spread out).

Or if you want “contemporary” why OPEC is starting to break up.

Those that have most to profit like the makers of arms etc, generally position themselves to not just make vast profit, but also in ways to best avoid any of the harms, for them or their families etc.

In some respects the hiding is easier for the actual operators currently, but less and less possible for the authoritarian initiators and their followers.

Clive da Plum Smuggler β€’ April 30, 2026 11:30 AM

@Clive,
you’re delusional, stop taking a dump here on this blog multiple times each and every day. Get a life man. Or is is the drugs you’re on?
I doubt it. i firmly believe that your toxic and narcissistic personality are to blame. Who da fck cares about your BS. Blah blah blah blah blah…..
$cum.

Clive da Plum Smuggler β€’ April 30, 2026 11:30 AM

@Clive,
you’re delusional, stop taking a dump here on this blog multiple times each and every day. Get a life man. Or is is the drugs you’re on?
I doubt it. I firmly believe that your toxic and narcissistic personality are to blame. Who da fck cares about your BS. Blah blah blah blah blah…..
$cum.

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