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Chainalysis
New York City, United States6 sources
Confirmed:Confirmed by the organisation, a regulator or a securities filing. First reported 5 Nov 2026.
Chainalysis says hackers stole credentials and tokens for all customers
The New York-based blockchain analytics firm said hackers obtained names, usernames, password hashes and live tokens for all of its users following a multifront cyberattack. Products including Reactor, KYT and Address Screening were taken offline and restored on 7 November 2026.
- Type
- Cyberattack
- Sector
- Technology
- First reported
- 5 Nov 2026
- Latest source
- 6 Nov 2026
What to do
- Follow updates from the organisation itself rather than social media.
- If you have an account, change that password, and anywhere you reused it.
- Turn on two-factor authentication, ideally an authenticator app or passkey, not SMS.
- Expect phishing that uses your real details. Do not click links in messages about this incident; go to the company's site directly.
- If they are a supplier, ask for an incident summary and the indicators of compromise.
- Patch internet-facing systems first, especially VPNs, firewalls and file transfer software.
Not sure? Ask an assistant with the sources attached, or have a coding agent check your systems.
Check your systems for Chainalysis
Sources
6- igorslab.de6 Nov 2026igorslab.de/en/leakwatch-week-45-2026-german-hardware-retail-attacks-81-million-leaked-email-addresses-amd-intel-nvidia
- theperimetersite.com6 Nov 2026theperimetersite.com/hacked-today
- informanoroeste.com.br6 Nov 2026informanoroeste.com.br/chainalysis-empresa-de-inteligencia-em-blockchain-sofre-ataque-e-expoe-clientes
- thehackernews.com6 Nov 2026thehackernews.com/2026/11/chainalysis-breach-exposes-all-users.html
- cybernews.com6 Nov 2026cybernews.com/security/chainalysis-cyberattack-exposes-users
- arstechnica.com6 Nov 2026arstechnica.com/security/2026/11/chainalysis-says-hackers-stole-credentials-and-tokens-for-all-of-its-customers
Confidence 90% that this is real and correctly placed. Locations are city centroids at best. Spotted an error? Report a correction.