Account Takeover

Prevent cybercriminals from using compromised accounts to exploit trust

What is Account Takeover?


Account Takeover (ATO) is the process of taking unauthorized possession of online accounts using stolen credentials. This unsanctioned access allows cybercriminals to launch various attacks such as phishing, Business Email Compromise (BEC), control of finances, data loss, and the list continues.

Go behind the scenes of an account takeover as Paul Chavez, an email security expert, discusses how email account takeover (ATO) factors into business email compromise (BEC) & spear-phishing attacks.

Anatomy of an Attack

Account takeover-based email attacks are among the toughest to detect — and the most devastating. Launched from compromised accounts of legitimate users, these attacks prey on the trust established amongst individuals.


PHASE 1: Acquisition

Initial Compromise 

Cybercriminals collect email account credentials or user client access via phishing attacks or purchase credentials over the dark web.

The Agari Advantage

Account Takeover Discovery

Detecting unauthorized users in legitimate email accounts or user clients is critical to defending against account takeover-based attacks.

Fortra's Agari understands the complex information behind the email message and analyzes expected behaviors between sender and recipient to accurately determine if a message from a previously established email account should be trusted. With protection for both internal and outbound email, Agari provides 360° security for all advanced threats.

View the White Paper >

ato attacks white paper






Account Takeover Prevention

Convincing people into downloading malware or logging into a fake website is core to an ATO-based attack. Identity deception makes it difficult for the victim to know if the sender has malicious intent, and advanced attacks hijack the conversation at appropriate times so the recipient never suspects anything.

By understanding good email-sending behaviors, Agari can spot anomalies and patterns that differ from the norm. Emails can be blocked based on the severity of divergence to ensure untrusted email never reaches the inbox.

Watch the Webinar >

Growing Smarter Every Day

It’s not enough to react and detect attacks from a compromised account, but to prevent and deter them before they strike. When phishing attacks are identified early, businesses can protect valuable customer information and reduce the risk of account compromise. 

By combining best-of-breed services from Agari and Fortra’s PhishLabs, the Customer Phishing Protection product bundle stops domain spoofing, detects phishing campaigns, and mitigates the infrastructure threat actors rely on. 

Even though your business may not have seen a threat, Agari and PhishLabs likely have. And because Fortra is at work already protecting organizations worldwide, it grows smarter and more effective each day.
Learn more about Customer Phishing Protection >


See Cloud Email Protection In Action

Try this product tour to see why companies use Cloud Email Protection to protect their inboxes.