According to ADT, the hackers were able to gain access using compromised credentials obtained through one of its business partners
ADT, a well-known provider of physical security solutions such as alarm systems for homes and small businesses, has experienced its second data breach in recent months. The company disclosed the incident to the U.S. Securities and Exchange Commission (SEC) on Monday, confirming that unauthorized access to its network had once again led to data theft.
According to ADT, the hackers were able to gain access using compromised credentials obtained through one of its business partners, who has already been notified about the breach. The company stated that while internal data linked to employee user accounts was exfiltrated, the stolen information was encrypted.
“Based on its investigation to date, the Company does not believe customers’ personal information has been exfiltrated, or that customers’ security systems have been compromised,” ADT said in its statement.
In response to the attack, ADT implemented containment measures, but these have caused some disruptions to its information systems. The investigation into the breach is still in its early stages, and more details may emerge as the company continues to assess the damage.
At this time, no specific ransomware group has taken responsibility for the breach.
This is the second security incident ADT has faced recently. In August, the company confirmed that hackers had stolen customer data, with over 30,000 records reportedly compromised in that attack. However, ADT has emphasized that this latest breach is unrelated to the previous one.
The company has not released further details on the current incident, but the absence of any direct impact on customers’ personal data may offer some reassurance amid growing concerns over cybersecurity vulnerabilities in critical infrastructure companies.
While ADT continues its investigation, security experts are keeping a close eye on developments, as more companies grapple with the challenges of keeping their systems secure in an increasingly complex digital landscape.

