Sotheby's International
Aug 2026 · Graded Attested · Retail and Consumer · Beyond the filings
Incident summary
Sotheby's InternationalAug 2026
Not yet quantified
AAttestedSotheby's International, a luxury real estate firm, reported it is investigating a cyber security incident involving unauthorized access to data held in a third-party software platform used to store marketing contact information. The company said the person who accessed the data claimed to have obtained 1.6 million contacts but it refuted that claim because it did not have that many on its database. Regardless of the number, given Sotheby's clientele, even marketing data seems to be a valuable haul from a valuable brand.
Retail and Consumer
Luxury real estate firm hit by cyber security attack
Initial attack type third-party or supply chain confirmed · 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.