Statement Regarding WannaCry Ransomware

May 15, 2017

From: Client Security Management Office ADP Global Security Organization

A global cyber-attack impacting businesses and critical services known as “WannaCry ransomware” has been widely reported in the news. This attack is carried out through phishing emails and locks down all files on infected computers until the user pays to release control of those files.

At this time, ADP has determined that none of its internal systems have been compromised by this attack, and no intrusion has occurred. ADP’s layered defense includes technologies and controls to identify and/or prevent these types of threats, including assessing vulnerabilities and applying appropriate protection and detection control updates. Additionally, since this specific attack involves the receipt of phishing emails, we have alerted our employees and provided them with preventative measures.

ADP’s Global Security Organization continues to actively monitor this situation as it does with all reported malware activity. Clients are encouraged to visit ADP’s Trust Center at to learn more about how ADP protects security and privacy, and how clients can help protect themselves. For information on phishing prevention, please visit:

Protecting our clients and their data from malicious activity is a top priority for ADP. If you have questions or concerns, please contact our Client Security Management Office via email at

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