# What are Account Takeover (ATO) Attacks

Account takeover is one of the top threats facing businesses today. Frequent incidents of data breaches, weak and recycled passwords, sophisticated attack techniques, and use of outdated defense mechanisms make ATO difficult to detect until significant damage is already done.

## What is an account takeover (ATO) attack

Account takeover (ATO) attack is a type of identity theft where bad actors gain unauthorized access to genuine user accounts using stolen login credentials. They then exploit these compromised accounts to steal funds, make unauthorized purchases, abuse reward programs, phishing, and in worst cases, money laundering.

## Why account takeover attacks are on the rise

Account takeover attacks continue to increase in a rapidly digitizing world. There are several reasons powering this rise, including:

- **Weak/recycled passwords:** With multiple digital accounts across websites and mobile apps, consumers create passwords they can easily remember. For instance, date of birth, anniversary, and commonly used words. However, these passwords are weak and easy to crack.

- **Data breaches:** Spillage of consumer data from frequent incidents of data breaches provides fraudsters with fresh databases of user credentials.

- **Automation:** Using bots, fraudsters can quickly achieve scale in phishing, credential stuffing, and login attempts, boosting the success rates of these attacks.

- **Generative AI:** Emails, text messages, and deepfake videos created using generative AI appear more convincing, tricking people into sharing their sensitive details.

- **Commoditized toolkits:** It’s easier than ever to outsource crime-as-a-service or access criminal toolkits, expertise, and 24x7 support at nominal costs, enabling even wannabe fraudsters to launch sophisticated attacks with little-to-no technical expertise.

- **Evading detection:** Aware of the existing defense mechanisms, fraudsters use sophisticated evasion tactics, such as spoofing, VPN, TOR, device resets, and more to bypass security checks and evade detection.

- **Outdated user authentication:** Legacy or obsolete fraud detection systems increase the risk of account takeover attacks.

- **Insider threats:** Disgruntled or greedy employees may reveal sensitive information to fraudsters in exchange for money.

## What role do automation and generative AI play in ATO attacks

Today’s fraudsters are weaponizing automation and generative AI to launch complex and targeted account takeover attacks. Using these sophisticated tools, they create convincing email, text, and deepfake video messages for phishing campaigns.

**What industries are the popular targets for ATO attacks**

Account takeover is an omnipresent challenge, affecting businesses across industries:

- **Financial services:** To steal funds and sensitive financial data.
- **eCommerce:** For unauthorized purchases and to access stored payment and personal details.
- **Social platforms:** For social engineering, spreading misinformation, impersonation.
- **Telecommunications:** SIM-swapping to intercept codes.
- **Enterprise services:** To access intellectual property and other critical information.

## How do ATO attacks impact businesses and consumers

Account takeover attacks can have a long-term impact on businesses and consumers. Businesses can face financial losses, indirect costs, operational disruptions, and damage to brand reputation. Affected customers may incur financial losses and distress from recovering lost assets.

## What are the regulatory implications of ATO

ATO attacks trigger data breaches exposing businesses to regulatory implications. Regulations such as the GDPR and CCPA mandate safeguards and communication in case of incidents. Failure to comply may lead to penalties and lawsuits.

## What are the common techniques used in ATO attacks

Commonly used techniques include:

- **Credential Stuffing:** Automate login attempts to find valid username-password combinations.
- **Phishing:** Trick users into sharing sensitive details.
- **Brute Force Attacks:** Try passwords until a match is found.
- **Session Hijacking:** Steal session cookies or tokens.
- **SIM Swapping:** Gain control of a user’s phone to bypass authentication.

## How does an ATO attack play out

Fraudsters execute an ATO attack by:
- **Credential harvesting:** Collecting user credentials.
- **Credential testing:** Using credential stuffing or brute forcing.
- **Validation:** Verifying access with bots.
- **Establish persistence:** Locking account owners out.
- **Monetization:** Exploit accounts or sell access details.
- **Evasion:** Use proxy servers or cover trails.

## Why traditional fraud prevention fails to detect ATO attacks

Traditional defense techniques lack real-time risk assessment capabilities and can easily be bypassed by superior attackers.

## What are the indicators of an ATO attempt

Potential indicators include:
- Logins from unusual locations or devices.
- Multiple failed login attempts.
- Changes to password or account settings.
- Anomalous account behavior.

## How can businesses fortify their defenses

To protect against account takeover attacks, businesses should implement:

- **Multi-factor authentication (MFA):** For security.
- **Rate limiting and CAPTCHA:** To deter automated attacks.
- **Device fingerprinting:** To detect manipulated devices.
- **Behavioral analytics:** To flag anomalous behaviors.
- **Bot management:** To deter automated attacks.
- **Continuous monitoring:** To spot anomalous login patterns.

**Incident response plan:** To ensure comprehensive response to an ATO attack from recovery to communication with stakeholders.

## Why trust Bureau for adaptive ATO prevention

Bureau’s integrated risk decisioning platform uses deep document verification and behavioral biometrics to provide adaptive protection from evolving ATO tactics. With easy integration and 24x7 support, Bureau empowers its partners with actionable insights and threat intelligence.