Former IBM Security Executive Sues IBM and AT&T Over Concealment of Foreign Cyberattacks (heise.de)

• William Barlow filed a whistleblower lawsuit in 2020 against IBM and AT&T, unsealed in June 2026.
• Allegation: Repeated foreign cyberattacks on IBM's cloud (run by AT&T) were covered up.
• Specifically mentioned: Chinese APT10 group that stole 100,000 Navy personnel records in 2018.
• IBM and AT&T failed to disclose breaches as required by US government contracts due to military use.
• Barlow claims IBM executives pressured him to weaken internal reports and hide details.

"William Barlow, a former IBM vice president of threat intelligence, filed a whistleblower lawsuit in 2020 against IBM and AT&T alleging they covered up repeated foreign cyberattacks, including by China's APT10 group. The suit became public in June 2026 after the US Department of Justice declined to intervene. Barlow claims the companies failed to disclose breaches of IBM's AT&T-operated cloud infrastructure, parts of which serve the US military."