ADT Data Breach

ADT, a professional services company based in the United States, was listed as a victim on the LockBit 5 ransomware group’s leak site on August 23, 2026. The company provides security and monitoring services across the US market. ADT’s listing under LockBit 5 is significant given the prominence of the target — a well-known security services brand — and the continued resurgence of LockBit operations under the version 5 rebuild. Over the past 60 days, LockBit 5 has claimed approximately 28 victims, with Manufacturing, Professional Services, and Technology as its top targeted industries. Germany, France, and the United States are the group’s most active victim countries. LockBit 5’s professional services targeting is well-documented, and ADT fits within this pattern as a major US-based service provider. The current victim dataset does not include other LockBit 5 targets sharing ADT’s specific US professional services profile, making this a notable standalone listing. The group’s willingness to target a large and publicly recognized security brand signals an escalation in operational boldness.

Initial-access correlation against SOCRadar’s stealer-log telemetry returned no records for adt.com in the queried slice. A null result is not the same as a clean bill of health — the sample is paginated, alternate domains and personal email aliases fall outside this query, and credentials may have been used and rotated before indexing. Infostealer-sourced credentials remain one of the most reliable initial-access vectors for ransomware groups operating at scale. While no stealer-log evidence was surfaced for adt.com in this query, the absence of a finding in a paginated sample is not equivalent to confirmed clean posture. LockBit 5’s operational profile is consistent with phishing, exposed VPN appliances, and recycled credentials as entry paths; affected organizations are advised to audit authentication logs, enforce MFA on internet-exposed services, and treat the listing itself as an indicator that the threat actor has gathered sufficient operational intelligence about the target.

This report is intended for threat intelligence and security awareness purposes. SOCRadar does not host, redistribute or buy stolen data. All breach information reported here is collected from publicly accessible threat actor and ransomware portals. This content is intended to equip CTI teams with context around recent attacks. While we strive for accuracy, listings on ransomware leak and extortion sites cannot always be independently verified and may not reflect confirmed breaches. If you believe any data in this report is incorrect, please contact us.