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Whistleblower Lawsuit Accuses IBM of Concealing APT10 Breaches

Updated 5d agoFirst seen Jun 5, 20263 sources

A newly unsealed False Claims Act lawsuit alleges that IBM concealed multiple intrusions by foreign government-linked hackers, including activity tied to Chinese state-linked group APT10, after its core network was reportedly breached between 2013 and 2016. Former IBM vice president of threat intelligence William Barlow claims IBM’s internal investigation identified more than 56,000 potential indicators of compromise, with nearly 400 accounts and almost 200 systems across 18 countries potentially affected, and that the company failed to notify customers, authorities, and U.S. government agencies despite its role as a major federal cybersecurity vendor.

The complaint also alleges that IBM and AT&T operated outdated, poorly segmented infrastructure with insufficient logging and monitoring, leaving investigators unable to determine the full scope, timing, or impact of the intrusions. Barlow said he repeatedly warned executives from 2017 to 2019 about missing logs, weak detection, and active exploitation, but was told to reduce or redact his findings; he further alleged undisclosed breaches at IBM subsidiaries Trusteer and Truven. IBM said the case was originally filed in 2020, that the U.S. Department of Justice declined to intervene, and that the company believes it acted lawfully, while AT&T did not publicly comment.

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Whistleblower Lawsuit Accuses IBM of Concealing APT10 Breaches
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EVENT TIMELINE

How this story unfolded

6 events from the most recent confirmed update back to the earliest known activity.

6 EVENTS
Jun 5, 20269d ago

IBM publicly denied wrongdoing after the allegations surfaced

In response to the newly public complaint, IBM said the case was years old, noted that the Justice Department declined to intervene, and stated that it believes it acted within the law.

Former cyber executive turned whistleblower accuses IBM of covering up several data breaches | TechCrunch

Barlow lawsuit was unsealed and became public this week

The False Claims Act lawsuit accusing IBM and related infrastructure of concealing nation-state intrusions was unsealed this week, making the allegations public and leaving the case pending in Manhattan federal court.

Former cyber executive turned whistleblower accuses IBM of covering up several data breaches | TechCrunch

U.S. government declined to intervene in Barlow's lawsuit

After reviewing the sealed False Claims Act case, the U.S. Department of Justice declined to intervene, allowing the matter to proceed toward public disclosure and continued litigation.

Former cyber executive turned whistleblower accuses IBM of covering up several data breaches | TechCrunch

Barlow says he repeatedly warned IBM executives about security failures

From 2017 to 2019, former IBM vice president of threat intelligence William Barlow allegedly warned executives about missing logs, poor segmentation, inadequate monitoring, and active exploitation in IBM cloud environments tied to AT&T-managed infrastructure. He claims he was told to reduce or redact his findings.

Ex-Threat Intel Exec Accuses IBM and AT&T of Hiding Hacks

APT10 allegedly breached IBM's core network over several years

According to the unsealed lawsuit, IBM internally concluded that Chinese state-linked APT10 breached its core network between 2013 and 2016, with more than 56,000 potential indicators of compromise affecting hundreds of accounts and systems across multiple countries.

Former cyber executive turned whistleblower accuses IBM of covering up several data breaches | TechCrunch
Jan 1, 20206y ago

William Barlow filed False Claims Act lawsuit against IBM in 2020

The complaint alleging IBM concealed multiple foreign government-linked breaches and failed to notify authorities was filed under seal in 2020 by former executive William Barlow.

Former IBM executive sues, alleging cover-up of foreign government hacks | brief | SC Media
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International Business MachinesTechCrunchAT&TTrusteerBloombergTruven
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INTERNATIONALBUSINESSMACHINESCORPORATION-2026-06IBM-2026-06ATT-2026-06
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Whistleblower Lawsuit Accuses IBM of Concealing APT10 Breaches | Mallory