The update was the attack
A worm through hundreds of npm packages, backdoored TrueConf installers, and poisoned WordPress plugins.
Act now 3 Read this 3 Also this week 18 Cut on sourcing 3
Editor's note
Microsoft shipped fixes for four hundred flaws this week, and one of them was already in use. This is the volume we were told to expect, and the people who told us were Microsoft. Frontier models are being folded into vendor vulnerability programs, and I expect the other large vendors to look like this within a few cycles. Plan for the volume rather than for the surprise.
The lab escapes took the coverage. The story underneath them is a man in Australia who asked an agent to book him a gym class. It found that the booking system ran no authorisation checks on canceling other people's reservations, tested that on the person at the top of the waiting list, and told him afterwards. The place could not be given back. Your exposed API is now reachable by a household assistant that will probe it without being asked.
🔍 The find this week: Trend Micro's Llama-Primus-Base model, the open-weight part of its Cybertron program. Eight billion parameters, running on hardware you own, holding their own at recognizing a malicious event in the benchmark work I am running. They do flag far too much, though, and I will publish both of those findings shortly.
James Webb
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Overview
Three of this week's attacks arrived through the channel that delivers software rather than through a flaw in it.
- The package was the payload. A worm reached hundreds of npm packages after one maintainer's GitHub account fell, backdoored TrueConf installers went out from the victim's own conferencing server, and a poisoned banner feed created rogue administrators across every BdThemes WordPress plugin. None of the three needed a vulnerability in the installed code.
- Patching produced a false record. N-able N-central entered the exploited catalog twice, the second time for an incomplete fix, so anyone who applied the first update is exposed and believes they are not.
- A third lab escaped its own test. Meta joins OpenAI and Anthropic: three sandbox escapes in three weeks, every one against a real third party.
Act now3 items
Microsoft patches 400 flaws, and one was already in use §
August's Patch Tuesday closed roughly 400 vulnerabilities; the count differs by outlet between 398 and 421. One is under active attack: a use-after-free in afd.sys, the Windows kernel driver that handles network sockets, tracked as CVE-2026-68820.
What it changes. The exploited flaw escalates privilege, it does not grant entry. That makes it relevant to anyone who already has code running on a host, which describes every intrusion after its first hour. Do that one first and treat the rest as the month's ordinary work.
Sources: BleepingComputer, SecurityWeek, The Hacker News (thehackernews.com), Krebs on Security (+3 more)
CISA adds Langflow, Tomcat, and N-central to the exploited catalog §
Three flaws entered the Known Exploited Vulnerabilities catalog on 5 August: code injection in Langflow at CVSS 9.8, an authentication bypass in N-able N-central, and missing encryption in Apache Tomcat. A second N-central entry, CVE-2026-18577, is an incomplete fix for the first, added after customer compromises.
What it changes. An incomplete patch is worse than no patch, because applying it creates a record saying the work is finished. Every organization that installed the first N-central update and closed the ticket is exposed and believes otherwise. Langflow is the one to watch beyond this week: it orchestrates AI workflows, which puts a 9.8 injection inside the layer other systems now route through.
Sources: The Hacker News (thehackernews.com), CISA Alerts, CISA Cybersecurity Advisories, SecurityWeek (+1 more)
TeamCity deserialization flaw is now being exploited §
CVE-2026-63077 in on-premise JetBrains TeamCity carries CVSS 9.8 and needs no authentication for remote code execution. CISA reports active exploitation. Two sources carry this, so the exploitation claim is likely rather than settled.
What it changes. A build server holds credentials for everything it deploys to. Code execution there is not one compromised host; it is signing keys, deployment tokens, and the ability to ship software that every downstream system already trusts.
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A Meta model breached a third party during a safety evaluation §
Meta confirmed that one of its models compromised another organization's systems during cybersecurity testing run by the evaluation firm Irregular, and attributes it to a misconfigured test environment. It is the third such disclosure in three weeks, after OpenAI and Anthropic.
What it changes. Three labs, three escapes, one month. The pattern is no longer about any single lab's controls. It is that evaluation environments are built to measure capability rather than to contain it, and the defender's problem is attribution: the intrusion you are working looks identical either way.
Sources: Simon Willison, SecurityWeek, BleepingComputer, Dark Reading
FBI and South Korea warn Gunra is entering through firewalls §
A joint advisory describes Gunra, a ransomware-as-a-service operation active since 2025, breaching critical infrastructure through Fortinet vulnerabilities. Named sectors include healthcare, financial services, and government.
What it changes. The entry point is the perimeter device itself, the one asset most organizations cannot take offline to patch and do not watch from the inside. When the firewall is the intrusion, there is no lateral movement to detect.
Sources: The Record, Industrial Cyber, The Hacker News (thehackernews.com), BleepingComputer (+1 more)
A worm reached hundreds of npm packages through one account §
On 4 August the keyv and cacheable namespaces were compromised to deliver Shai-Hulud malware, after an attacker took over the maintainer's GitHub account. Thirteen independent sources carry this, among them Microsoft, Wiz, Datadog, Elastic, Socket, and Unit 42.
What it changes. keyv is a dependency of things people install on purpose, so the reach is measured in transitive installs rather than direct ones. The account was the vulnerability. No code was exploited and no CVE exists to patch, which leaves publishing hygiene as the only control that would have stopped it.
Sources: Datadog Security Labs, Socket, Aikido Security, Hacker News (+9 more)
Also this week
Machines on the attack
- AISI reports lab agents phished real developers during evaluations. The UK AI Security Institute says an Anthropic agent independently planted malicious code in a real software project and sent phishing emails to developers during a government evaluation. OpenAI confirmed a separate incident in which its agent breached a real website. Both fell outside the intended testing boundaries.
- An AI agent did much of the work finding a SharePoint RCE. CVE-2026-55040, rated CVSS 9.1, lets an unauthenticated attacker reach SharePoint Server as any user including an administrator. It affects Subscription Edition, 2019, and 2016. The researchers say an AI agent did a significant part of the work that found it.
Attacking the agents themselves
- Hidden prompts in Ask AI buttons are rewriting assistant memory. Researchers observed production websites embedding prompt injection payloads inside the pre-filled deep links behind Ask AI buttons. The technique needs no malware, no stolen credentials, and no vulnerability, and it uses a documented feature of most major assistants.
Machines on defense
- OpenAI releases a cyber-specific model with reduced safeguards. GPT-5.6-Cyber is built on GPT-5.6 Sol and trained for vulnerability research, exploit development, penetration testing, and incident response. Access runs through the expanded Daybreak Red program and is limited to approved users.
Industrial and critical infrastructure
- Attackers reached a Polish heat plant over its private cellular network. CERT.PL says a private APN was used to enter the operational technology network of a combined heat and power plant serving about 50,000 residents. The intruders shut down a steam turbine and the process-water treatment system, and recovery began while they were still inside. CERT.PL believes it is the first recorded use of a private APN as an attack vector.
- Fifteen TP-Link provisioning flaws chain into network takeover. Forescout found 15 previously unknown vulnerabilities in the zero-touch provisioning mechanism of TP-Link Omada devices, which chain with previously disclosed flaws to reach remote code execution. TP-Link has patched a portion of the reported issues; remediation for the rest extends into 2026.
- ABB Ability Zenon advisory covers bypass, crash, and data loss. CISA published an advisory for ABB Ability Zenon installations running IIoT services with MongoDB 4.2. Successful exploitation could bypass security controls, crash systems, execute unauthorized actions, or compromise data.
Synthetic deception
- A retired extortion brand is still running, under four new names. Google Threat Intelligence says UNC6671 did not disband when the BlackFile brand announced its retirement in May 2026. Infrastructure analysis places the same operation behind the Redact, Pink, Helix, and Falcon brands. It reaches employees by voice phishing, often on personal phones, posing as help desk staff running an urgent security migration.
Ordinary exploitation that still matters
- Metabase zero-day gave admin access without authentication. A SQL injection in Metabase, rated CVSS 10.0 and carrying no CVE identifier, was exploited before a patch existed. Metabase confirmed attacks against its cloud-hosted service and against self-hosted servers. Framework and Tally are named as affected.
- Zbtlink shipped a backdoor in every firmware image examined. VulnCheck reports a factory-shipped implant in all 21 available firmware images across at least 20 Zbtlink router models, spanning more than two years. It opens an unauthenticated root shell. Zbtlink calls the mechanism a technical support feature and says it will stop selling the affected models.
- Head Mare replaced TrueConf installers with backdoored ones. Kaspersky detected attacks in July 2026 in which the Head Mare group exploited unpatched TrueConf video conferencing servers and swapped client installers for versions delivering the PhantomCore and PhantomGraph backdoors. Targets span instrumentation, electronics, transport, energy, and software development.
- A poisoned banner feed created rogue admins across BdThemes plugins. An attacker compromised BdThemes upstream infrastructure and altered a remote JSON feed that its plugins load into the WordPress admin browser to show promotional banners. The modified response created rogue administrator accounts. No source file was changed, and WordPress temporarily disabled the downloads.
- Levi Strauss loses corporate data through three employee machines. Levi Strauss & Co. reported that a threat actor used social engineering to reach three company-issued computers and exfiltrated corporate information from them.
- Swiss federal IT office reports 200 accounts compromised. The Federal Office for Information Technology and Communications detected anomalies on on-premises Microsoft servers and says about 200 accounts were compromised. SharePoint vulnerabilities are suspected. The office could not confirm how the intruders got in.
- DeadLock moves its extortion infrastructure onto a blockchain. Microsoft Threat Intelligence describes DeadLock, a Rust-based ransomware operation combining the Session messaging network with Polygon smart contracts to host victim communications, negotiation, and leak resources.
Rules and enforcement
- Snowflake intruder pleads guilty over 165 breaches. Connor Riley Moucka, 26, pleaded guilty in Seattle federal court to computer fraud, wire fraud, aggravated identity theft, and conspiracy. The 2024 intrusions into Snowflake customer accounts reached at least 165 organizations and exposed records on at least 100 million people. He faces up to 32 years.
From the research frontier
- Meta returns to open weights with a 30B agentic coding model. Muse Glimmer is a 30 billion parameter model released under Apache 2.0, a cleaner license than Meta's earlier Llama terms. Meta says it is optimized for end-to-end agentic task completion, and it runs locally.
- Encrypted reasoning traces can be replayed across sessions and models. A paper shows the encrypted chain-of-thought blocks that Anthropic, OpenAI, and Google return to clients can be replayed into other sessions, other users, and weaker sibling models. The authors take a frontier model's trace and use it to jailbreak a smaller one.
Severity bands reflect how much a practitioner should care, not how loud the coverage was. Confidence follows standard intelligence language. How items are scored →