HR and Payroll outsourcing giant Automatic Data Processing, Inc., (ADP) experienced a system intrusion, that as of now, has affected one client. In an announcement this afternoon, ADP said that it was investigating and taking measures to address the impact of a system intrusion that occurred with a client at Workscape, a benefits administration provider that ADP acquired in August 2010. Though the incident is limited to a single client, ADP didn’t say if and how many records from the client may have been potentially exposed.
Based on early reports and information coming from ADP, the damage doesn’t appear to be significant based on claims that the intrusion was detected by the ADP security team during routine monitoring and occurred on a non-payroll platform that is no longer sold by the company.
ADP added the following in a statement released this afternoon:
Since learning of this intrusion, and based on the preliminary intelligence and information gathered to date, ADP believes that the impact of the incident is limited to a single client. ADP immediately notified the client to make the client aware of the situation, and continues to take all appropriate measures to investigate and to help mitigate any issues. ADP has also been actively cooperating with law enforcement to determine the cause of this incident and to assist authorities in identifying and apprehending those responsible. Because this incident is the subject of an ongoing law enforcement investigation, ADP cannot disclose any additional details at this time. ADP will provide further updates once information that can be made public becomes available, and we will continue to communicate with all affected parties as appropriate.
Related Reading: Understanding Web Application Security – Defending the Enterprise’s New Porous Perimeter
ADP acquired Workscape in August 2010. Workscape provides solutions including talent management, benefits administration and employee communications for hundreds of organizations and millions of workers around the world.
With nearly $9 billion in revenues and about 550,000 clients, ADP is one of the world’s largest providers of HR, payroll, tax and benefits administration solutions

For more than 10 years, Mike Lennon has been closely monitoring the threat landscape and analyzing trends in the National Security and enterprise cybersecurity space. In his role at SecurityWeek, he oversees the editorial direction of the publication and is the Director of several leading security industry conferences around the world.
More from Mike Lennon
- ‘No Evidence’ of Cyberattack Related to FAA Outage, White House Says
- SecurityWeek to Host 2022 ICS Cybersecurity Conference October 24-27 in Atlanta
- Google Completes $5.4 Billion Acquisition of Mandiant
- Cybersecurity Firm ZeroFox Begins Trading on Nasdaq via SPAC Deal
- HUMAN Security and PerimeterX Merge on Mission to Combat Bots
- Last Call: CFP for ICS Cybersecurity Conference Closes July 15th
- Johnson Controls Acquires Tempered Networks to Shield Buildings From Cyberattacks
- Snowflake Launches Cybersecurity Workload to Find Threats Across Massive Data Sets
Latest News
- Comcast Wants a Slice of the Enterprise Cybersecurity Business
- Critical Baicells Device Vulnerability Can Expose Telecoms Networks to Snooping
- New York Attorney General Fines Vendor for Illegally Promoting Spyware
- SecurityWeek Analysis: Over 450 Cybersecurity M&A Deals Announced in 2022
- 20 Million Users Impacted by Data Breach at Instant Checkmate, TruthFinder
- Cyber Insights 2023 | Zero Trust and Identity and Access Management
- Cyber Insights 2023 | The Coming of Web3
- European Police Arrest 42 After Cracking Covert App
