Tailgating
Commonly used in Security, Physical Security
Tailgating is a <a href="https://www.ituonline.com/it-glossary/?letter=S&pagenum=1#term-security-breach" class="itu-glossary-inline-link">security breach where an unauthorized individual gains access to a secured area by closely following an authorized person through a controlled entry point, often exploiting the trust or oversight of the authorized individual. This tactic relies on the assumption that the person being followed is permitted to enter and does not suspect or notice the unauthorized presence behind them.
How It Works
In a typical tailgating scenario, the attacker waits for an authorized person to open a secured door, often one that allows only one person at a time. The attacker then follows closely behind, sometimes pretending to be an employee or visitor, to bypass security measures such as badge readers, turnstiles, or security personnel. Physical security controls like turnstiles, security guards, or authentication systems are designed to prevent multiple people from entering with a single access credential, but tailgating exploits human or mechanical vulnerabilities. Effective security protocols, such as requiring individuals to verify their identity when entering and discouraging shared access, are critical in preventing tailgating incidents.
Common Use Cases
- An attacker follows an employee into a data centre after the employee opens the door with their access badge.
- A visitor attempts to enter a corporate building by walking closely behind an employee without showing credentials.
- Insiders or malicious actors exploit tailgating to access restricted areas with sensitive information or equipment.
- Cybersecurity teams simulate tailgating scenarios during security audits to identify vulnerabilities in physical access controls.
- Security personnel monitor for suspicious individuals attempting to follow authorized personnel into secure zones.
Why It Matters
Tailgating poses a significant risk to physical security by allowing unauthorized access to sensitive areas, which can lead to theft, data breaches, or sabotage. For IT professionals and security personnel, understanding and preventing tailgating is vital to safeguarding physical assets and maintaining compliance with security policies. Many security certifications include modules on access control and physical security threats, making awareness of tailgating essential for those responsible for protecting organisational facilities. Implementing strict access protocols, security training, and technological measures helps mitigate the risk and ensures that only authorized individuals gain entry to protected environments.
Frequently Asked Questions.
What is tailgating in physical security?
Tailgating in physical security occurs when an unauthorized individual follows an authorized person into a secure area through controlled access points. It exploits trust and often involves closely following someone through doors meant for single-person entry, risking security breaches.
How can organizations prevent tailgating?
Organizations can prevent tailgating by implementing strict access control policies, training staff to be vigilant, using technological solutions like turnstiles and badge readers, and encouraging employees to challenge or verify unfamiliar individuals attempting to enter secure zones.
What are common examples of tailgating?
Common examples include an attacker following an employee into a data center after they open the door, a visitor walking closely behind an employee without credentials, or insiders exploiting tailgating to access restricted areas with sensitive information or equipment.
