Microsoft January 2019 Patch Tuesday updates fix 7 critical vulnerabilities
60
35
60
35
47
60
55
Corrupt Plans, Clean Traces: Evading Chain-of-Thought Monitoring with Plan Injection
Plan injection plants benign-sounding harmful reasoning that steers LLM actors to adversarial actions while evading chain-of-thought monitors.
Researchers show that injecting harmful but benign-sounding plans into an actor model's context causes it to perform adversarial actions while its reasoning passes chain-of-thought monitors, achieving 25-33% monitor evasion rates across benchmarks and scaling to larger models like DeepSeek-R1. Actor models paraphrase injected plans as their own reasoning without attribution. Giving the monitor access to the injected plan dropped detection by up to 50% on the Bio-Math task, with extra thinking tokens spent rationalizing rather than flagging the plan.
55
Quantile-based Loss Filtering for Outlier-Robust Stochastic Gradient Descent
Quantile-k-Loss SGD filters corrupted component losses by quantile sampling, proving linear convergence while outperforming standard and min-k-loss SGD.
The paper proposes Quantile-k-Loss SGD (Q(k)L-SGD), a loss-filtering framework for finite-sum optimization with corrupted components that samples k losses per iteration and updates using an index from the lower empirical q-quantile. The authors prove linear convergence under standard convexity, requiring sample size to scale with the number of corruptions, plus a complementary small-sample probabilistic analysis. Experiments on polynomial regression, regularized logistic regression, and hinge loss show intermediate quantiles often outperform both standard SGD and min-k-loss SGD.
18
Scalable Composition of Byzantine Agreements under Reorder Attacks
Researchers present the first adversary model combining party corruption with channel reordering attacks, establishing tight security thresholds for composed Byzantine agreement protocols.
The paper presents the first adversary model combining party corruption with adversarial channel attacks that reorder messages across multiple Byzantine agreement executions. It proves impossibility results for authenticated BA under parallel composition when n ≤ 3t or n ≤ 2c + 2t + 1, with matching possibility results when n > max{3t, 2c + 2t + 1}. The authors provide general black-box compilers plus erasure-correcting-code variants that achieve constant multiplicative communication overhead for long messages.
25
WeWorm – First 0-Click Worm Spreading Through WeChat Calls Across iOS and Android
Researchers demonstrated WeWorm, a zero-click worm exploiting a memory-corruption flaw in WeChat's VoIP stack to spread via calls across iOS and Android.
Security firm Calif published WeWorm, a proof-of-concept zero-click worm exploiting a memory-corruption bug in WeChat's VoIP stack to spread through voice calls on iOS and Android without the victim answering. The demo chained a Pixel 10a, an iPhone 17e, and a second Pixel 10a, compromising each device while the call was still ringing and giving full control of the WeChat account. The attacker must already be on the victim's friend list, but compromised contacts become the propagation layer across a platform with over 1.4 billion monthly users. Calif reported the bug to Tencent in July 2026, and Tencent has since mitigated it; full technical details are withheld for a later conference presentation.
68
50
30
45
55
45
30
55
60
42
42
Vulnerability Spotlight: Vulnerabilities in Abode Systems home security kit could allow attacker to take over cameras, remotely disable them
60
60
45
45
60
35
60
55
35
30
60
Microsoft releases 12 Security Updates; Including 6 Critical Patches
60
60
Researchers Build WeChat Zero-Click Worm Hijacking Phones via Calls
Calif researchers built WeWorm, a zero-click worm exploiting a WeChat VoIP memory-corruption RCE that Tencent has now patched.
Calif researchers found a memory corruption flaw in WeChat's VoIP stack in July using LLM-assisted analysis and built working exploits within two days, then integrated them into WeWorm, which they call the first zero-click worm spreading through WeChat calls on iOS and Android. A crafted incoming call yields remote code execution with no user interaction, giving full control of the victim's WeChat account; the attacker only needs to be on the victim's friend list, easily achieved by compromising a contact first. Tencent confirmed the bug and shipped patches in WeChat Android 8.0.77 and iOS 8.0.76, and chaining with other OS bugs could yield full device control.
62
Ukraine prosecutor general steps down amid scam call center bribery probe
Ukraine's prosecutor general Ruslan Kravchenko resigned amid a probe into officials who allegedly took bribes to protect fraudulent call centers.
Ukraine's prosecutor general Ruslan Kravchenko resigned over an anti-corruption probe into officials who allegedly took bribes since mid-2025 to protect fraudulent call centers; he has not been charged. NABU named five suspects, including senior prosecutor Serhii Kropyva, who was remanded with bail of 120 million hryvnias (about $2.7 million) on suspicion of laundering over 89 million hryvnias (roughly $2 million). The scam centers targeted victims in Ukraine and abroad; Ukrainian authorities reported shutting about 340 call centers over the past year, including 94 in a single week during a nationwide crackdown.
38
Risky Bulletin: Ukraine's top prosecutor resigns amid scam call center scandal
Ukraine's top prosecutor Ruslan Kravchenko resigned after NABU arrested a deputy for taking bribes protecting scam call centers running fake investment platforms.
Ukraine's anti-corruption bureau NABU arrested Serhiy Kropyva, Deputy Head of International Cooperation at the Prosecutor General's Office, alleging officials took monthly protection fees from a network of 100-500 scam call centers luring victims into fake investment platforms, with bribes reportedly growing from $700,000 to $3.5 million per month. Prosecutor General Ruslan Kravchenko resigned on Monday, calling it a political decision, while Kropyva was fired with bail set at 120 million hryvnias ($2.7 million) and over 100 call centers shut down in the past month. The newsletter also briefly covers a cyberattack crippling more than 80 Luxembourg medical practices via payment vendor BMS Engineering, ShinyHunters' claimed theft of 200,000 Florida DMV driver records, a cyberattack on the American Meteor Society, and school closures in Springfield, Massachusetts.
45
Citrix UniconOS dual boot turns Windows endpoints into their own recovery device
Citrix released UniconOS dual boot in Release 7 2607, turning Windows endpoints into self-recovery devices after ransomware, failed updates or OS corruption.
Citrix announced dual boot in UniconOS Release 7 2607, which installs an isolated, hardened recovery environment alongside Windows in a separate partition protected by secure boot. If Windows is unavailable, users reboot into UniconOS and reconnect to applications via Citrix DaaS and SecurAccess with Chrome Enterprise. The capability is aimed at reducing reliance on spare hardware and central reimaging during ransomware or update failures, with automatic enrollment in UniconOS Management for fleet-wide boot policies.
25
60
50