MCBS
Jul 2026 · Graded Attested · Healthcare and Life Sciences · Beyond the filings
Incident summary
MCBSJul 2026
Not yet quantified
AAttestedMCBS confirmed that there had been unauthorized network access between September 22 and September 25, 2025, and files containing protected health information may have been viewed or exfiltrated from its network. The review of the affected data was completed on May 28, 2026, some 8 months after the network intrusion.
Healthcare and Life Sciences
MCBS Announces Cybersecurity Incident Impacting 1.26M Individuals
Initial attack type not disclosed · Impact data theft confirmed
About this record
This incident is beyond the filings: attributed to a company statement, a regulator or court record, or a news report, and graded Attested or Inferred. Every figure links to the source it was read from; if we have read one wrong, tell us at info@hackerinahoodie.com. This index never sums figures across incidents. See the methodology.