Casperinous (@Casperinous) header
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Joined February 2013
Photo by Casperinous (@Casperinous)Photo by Casperinous (@Casperinous)Photo by Casperinous (@Casperinous)Photo by Casperinous (@Casperinous)Photo by Casperinous (@Casperinous)Photo by Casperinous (@Casperinous)Photo by Casperinous (@Casperinous)Photo by Casperinous (@Casperinous)Photo by Casperinous (@Casperinous)
Fun research together with @Tera0017. Most reporting so far has been victim side, but we show the agent convos, the hacks and models the ARTEX operators used. Some obscure chinese grey-market cybercrime stories inside as well :3
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Casperinous retweeted
Meet simil.ar! We're building a new reverse engineering platform with a purpose-built decompiler and powerful file intelligence capabilities Analyse, identify and compare all your files in one place Our early access programme is open now: simil.ar/register
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Casperinous retweeted
We asked GPT-6 Astra to edit Qwen3.5-0.8B weights to improve math. It directly changed only 0.016% of weights, fixing 0.8B's reasoning loops & improving math up to 6x and even instruction following 3x, without gradients or training. We call this Weight-Space Programming: frontier LLMs can now natively read/write neural network weights! 🧵 Blog: rikiyat.github.io/blog/weigh…
Readers added context they thought people might want to know
LLM was given weights explicitly as text in prompt and used code/forward passes (per authors' logs) to ablate Qwen looping direction, a known thinking-mode issue per model card. Primarily fixed repetition in that mode, not general 'natively' improving weights/math. rikiyat.github.io/blog/weight-sp… github.com/RikiyaT/lm_und… huggingface.co/Qwen/Qwen3.5-0… huggingface.co/RikiyaT/Qwen3.…
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the cleverer among you can think of ways to use this, a trivial one is to lie to decompilers and lifters.
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One of the best explanations on CPU branching ocw.mit.edu/courses/6-004-co…
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There’s 100% a kind of mania you can get into with coding agents, where it feels like you’re getting a lot done and working all the time but nothing is really happening. I think it's often a form of avoidance of something else in life.
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Casperinous retweeted
#VoltTyphoon operational network for 0-day exploitation uncovered. Very insightful research from the people @lumentechco . Kudos for using the insights on this network over a 3 year timespan to inform victims/targets before major impact. lumen.com/blog/en-us/silent-…
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Casperinous retweeted
In an international law enforcement operation 👮, the US Department of Justice 🇺🇸, in cooperation with private sector partners, have taken down notorious bulletproof hosting provider Virtualine 💥 ➡️ justice.gov/usao-edva/pr/bul… Operating as AS202412 (Omegatech LTD), Virtualine received upstream connectivity from German 🇩🇪 providers aurologic GmbH (AS30823) and Pfcloud UG (AS51396), as well as French 🇫🇷 PEERXY NETWORKS SAS (AS213382), as bgp .tools shows. This network connectivity is now gone, currently making it impossible for Omegatech to operate 🛑 Omegatech announced 24x /24 IPv4 CIDRs, totaling 6,144 IPs. Out of these, hundreds were seen daily participating in spamming, internet-wide scanning, and botnet C2 hosting ⤵️ 🌐 URLhaus tracked over 10,000 malware distribution sites at Omegatech: urlhaus.abuse.ch/asn/202412 📡 ThreatFox logged 2,000+ community-shared IOCs tied directly to Omegatech: threatfox.abuse.ch/asn/20241… The hoster primarily served malicious infrastructure associated with RATs 🖥️ (e.g., PureRAT and OverlordRAT), rogue ScreenConnect servers 🔌, and social engineering malware campaigns like ClickFix and ErrTraffic 🖱️. While internet abuse for sure can happen, Virtualine was not reacting on abuse reports at all and advertised their "bulletproof hosting services" on the darkweb, as investigation shows 🕵️‍♀️ The takedown of Omegatech is welcome news. However, its long-term impact remains uncertain. Bulletproof hosters commonly re-brand and resume operations under new ASNs quickly 🔃 Furthermore, Omegatech is just the tip of the iceberg. Other active bulletproof hosters include: ➡️ AS219502 (STORMCLOUD) ➡️ AS207043 (DEDIK-IO) ➡️ AS214351 (FEMOIT) What do they all have in common? According to bgp .tools, they all receive upstream connectivity from German provider aurologic GmbH (AS30823) as well 🔍👀 If you don't want to worry about the threats posed by bulletproof hosters, just block any CIDRs and ASNs listed on @spamhaus 's Don't Router Or Peer List (DROP): 🛑 spamhaus.org/blocklists/do-n…
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This is absolutely nuts and only hitting German papers so far: leaked emails show that seven politicians from Germany's far-right AfD travelled to Syria to meet with Assad regime officials... facilitated by Hezbollah AND Russian intelligence. handelsblatt.com/politik/deu…
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Another day - another Stealer: MopsStealer 🐶 Active botnet C2s, hosted at Podaon SIA 🇳🇱: 📡 mops .to 📡 45.91.202.47:408 📡 45.91.202.47:1488 📡 45.91.202.146:408 📡 45.91.202.146:1488 Malware samples ⤵️ bazaar.abuse.ch/browse/signa… IOCs ⤵️ threatfox.abuse.ch/browse/ma…
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Casperinous retweeted
Every single person you meet in your daily life is fighting a hidden battle that you know nothing about Send them a Zoom meeting link for an 8 AM call on Monday morning to finish them off
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At #hexacon - Calif.io demos iOS 27.0.1 untethered jailbreak on iPhone 18 Pro
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Having previously posted that this was an interesting rabbit hole, a spam account liking that post a couple of weeks ago reminded me that I never actually explained why. So here's a brief version - maybe something we should blog about in more detail in the near future...
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Wrote up my attempt at deobfuscating Luraph-protected Lua: lifting Lua to LLVM IR , then using AI + partial evaluation to strip the VM, and checking it against the original. nac-l.github.io/2026/10/12/d…
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🦠 ThreatLabz has identified an x64 variant of GuLoader. The sample uses similar anti-analysis methods as GuLoader x86 samples. However, the following anti-analysis features have been added: - Huge stack frames in order to break IDA's decompilation. - Direct syscalls to call Windows native API functions. GuLoader chooses a different syscall address that is chosen randomly. - The registered Vectored Exception Handler (used to obfuscate the control flow) points to a location within NTDLL's memory region, making the exception-driven control flow appear legitimate. - Use of the Windows API function TrySubmitThreadpoolCallback to execute callbacks and avoid detection. Sample hash: dc5021a0e1d00fb1da9eef2b5d5ac3f9a5906e5c3c17470807c3845083ac5a6d Malicious Google Drive URL: hxxps://drive.google[.]com/uc?export=download&id=1Zynj-CzTxaYpQr5aniRGE5gUqs26k-t5
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Casperinous retweeted
I can’t tolerate people being cruel to everyone else dealing with their emotions and the implications of ai changing everything about their work (and life!) have some decency man
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