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Outages & Breaches: January 2025 in numbers

5 significant outages (0 critical) and 9 data breaches (0 critical) were logged in January 2025. The largest breach by records was TalkTalk (18.8M claimed). The longest outage with a known duration was Microsoft Azure (East US 2) (50 hours). The most common outage cause was cyberattack (3 of 5). 4 of the incidents mainly affected the UK.

Most significant incidents

• 31 Jan 2025Barclays app and online banking down over payday weekendBarclays · outage · Software bugUKmajor
• 30 Jan 2025CHC breach exposes 1 million Connecticut patientsCommunity Health Center · breach · Unknown · 1.1M recordsmajor
• 29 Jan 2025DeepSeek leaves chat logs exposed in open databaseDeepSeek · breach · None (exposure)major
• 26 Jan 2025Hacker claims 18.8 million TalkTalk recordsTalkTalk · breach · b0nd · 18.8M claimedUKmajor
• 23 Jan 2025$85m stolen from Phemex hot walletsPhemex · breach · North Korea (suspected)major
• 22 Jan 2025Conduent attack disrupts US state benefit paymentsConduent · outage · Cyberattackmajor
• 17 Jan 2025Otelier breach exposes Marriott, Hilton and Hyatt guestsOtelier · breach · Unknownmajor
• 15 Jan 2025Law firm breach exposes 3.5 million peopleWolf Haldenstein · breach · Unknown · 3.5M recordsmajor

All 5 outages

• 31 Jan 2025Barclays app and online banking down over payday weekendBarclays · outage · Software bugUKmajor
• 26 Jan 2025Ransomware forces New York Blood Center to reschedule donationsNew York Blood Center · outage · Cyberattackminor
• 22 Jan 2025Conduent attack disrupts US state benefit paymentsConduent · outage · Cyberattackmajor
• 8 Jan 2025Azure East US 2 networking failure lasts about 50 hoursMicrosoft Azure (East US 2) · outage · Configuration change · 50 hoursmajor
• 6 Jan 2025Cyber attack shuts Slovakia's land registrySlovakia land registry · outage · Cyberattackmajor

All 9 data breaches

• 30 Jan 2025CHC breach exposes 1 million Connecticut patientsCommunity Health Center · breach · Unknown · 1.1M recordsmajor
• 29 Jan 2025DeepSeek leaves chat logs exposed in open databaseDeepSeek · breach · None (exposure)major
• 28 Jan 2025Smiths Group hit by unauthorised accessSmiths Group · breach · UnknownUKminor
• 26 Jan 2025Hacker claims 18.8 million TalkTalk recordsTalkTalk · breach · b0nd · 18.8M claimedUKmajor
• 23 Jan 2025$85m stolen from Phemex hot walletsPhemex · breach · North Korea (suspected)major
• 20 Jan 2025IntelBroker claims HPE source code theftHewlett Packard Enterprise · breach · IntelBrokerminor
• 17 Jan 2025Otelier breach exposes Marriott, Hilton and Hyatt guestsOtelier · breach · Unknownmajor
• 15 Jan 2025Law firm breach exposes 3.5 million peopleWolf Haldenstein · breach · Unknown · 3.5M recordsmajor
• 12 Jan 2025Nominet network breached via Ivanti zero-dayNominet · breach · UnknownUKminor