Loading story…
Anthropic's Claude platform suffered another service disruption that caused elevated 529 Overloaded errors and partial outages across claude.ai, the Claude API, Claude Code, and Claude Cowork. Anthropic first reported the incident at 05:06 UTC and said it had identified the root cause by 05:27 UTC, but remediation was still in progress past 06:42 UTC with no full recovery confirmed.
The disruption affected several major models, including Claude Mythos 5, Claude Fable 5, Claude Opus 5, and Claude Opus 4.8, disrupting enterprise and developer access to production AI workflows. Anthropic said Claude Console and Claude for Government were not affected, while reporting around the incident pointed to a broader pattern of recurring Claude instability and capacity-related service issues during 2026.
Track how attackers are adapting to this technology.
3 events from the most recent confirmed update back to the earliest known activity.
As of past 06:42 UTC on August 24, 2026, Anthropic was still remediating the incident and had not confirmed full recovery or provided an estimated time to resolution. The outage continued to produce elevated 529 Overloaded errors across affected Claude models and interfaces.
Anthropic reported at 05:27 UTC on August 24, 2026 that it had identified the root cause of the Claude outage. The company did not disclose the underlying technical cause in the referenced reporting.
On August 24, 2026 at 05:06 UTC, Anthropic first reported a partial outage with elevated errors affecting Claude services. Impacted services included claude.ai, the Claude API, Claude Code, and Claude Cowork, while Claude Console and Claude for Government were unaffected.
Vulnerabilities, threat actors, malware, products, organizations, and breaches Mallory has linked to this story.
Follow how adversaries are adapting to this technology, and where it touches your stack today.
2 references tracked. Mallory keeps watching after this page renders.
Map indicators from this story to your assets and identify affected systems in minutes.
Every observed campaign, victim, and pivot linked to actors named in this story.
Malware, exploits, and IOCs connected to the activity described here.
YARA, Sigma, and Snort rules deployed to your SIEM as soon as they’re published.
Get matching new stories delivered to your team as they break — not the next morning.
Ask questions about this story and take action on the answers.
Other stories Mallory is tracking that overlap on entities, sources, or topic labels.
Anthropic suffered a worldwide service disruption that knocked Claude offline across its web interface and API-dependent services, causing failed prompts, slow responses, interrupted conversations, and widespread `529 Overloaded` errors. The incident affected multiple Claude models and began around 19:45 UTC, with Anthropic stating on its status page that it started investigating shortly afterward and had identified the issue by 20:33 UTC. Elevated error rates continued until about 21:26 UTC, and Anthropic later declared the incident resolved at 22:36 UTC after monitoring recovery across most models. The company did not disclose a root cause or estimated recovery details during the outage, but the error pattern pointed to temporary overload, backend capacity constraints, or related service issues that also disrupted tools and workflows built on the Claude API.
Jul 30, 2026
**Anthropic** reported a worldwide outage affecting its **Claude** AI platform, with users experiencing failed requests, timeouts, inconsistent responses, and login errors across web, mobile, and API access. The incident began with an “Investigating” status notice at **11:49 UTC**, followed by an update indicating the issue remained under investigation and no estimated time to resolution was provided. Anthropic later indicated it had identified functional problems impacting **some API methods** and said it was continuing work on a fix. The disruption affected a broad user base rather than a single region or application, resulting in widespread inability to access Claude services during the incident window.
Jun 29, 2026
Anthropic’s **Claude** platform suffered a widespread service disruption that affected users globally across the web app, mobile clients, and **Claude Code**, with reports of elevated errors, long response delays, hung sessions, and failed requests involving models such as `Opus 4.6` and `Sonnet 4.6`. User complaints rose sharply after the incident began around 0600 UTC, and Anthropic’s status page moved from reporting a partial outage to saying a fix had been implemented before later marking systems operational, though some customers continued to report intermittent problems after remediation. Separately, a security researcher disclosed a **critical supply-chain vulnerability** in Anthropic’s official **Claude Code GitHub Actions** workflow that could have allowed an unauthenticated attacker to compromise repositories using it, including Anthropic’s own. The flaw stemmed from write-permission checks that trusted any GitHub actor whose name ended with `[bot]`, enabling a malicious GitHub App bot to bypass restrictions and, when chained with prompt injection, potentially exfiltrate secrets, steal GitHub Actions `OIDC` credentials, obtain a privileged Claude GitHub App token, and push malicious code downstream; Anthropic said it patched the issues in `v1.0.94` with stronger actor validation and additional workflow hardening.
Jun 29, 2026