The Uninvited Danger of Tailgating in Cybersecurity
DataNudge
November 2023
In cybersecurity, where businesses substantially invest in firewalls, encryption, and complex access controls, tailgating is a seemingly commonplace yet dangerous issue that frequently goes unnoticed. In the context of cybersecurity, tailgating is the act of an unauthorized person trailing an authorized person into a prohibited region. There are serious threats to sensitive information’s availability, integrity, and confidentiality due to this physical security breach. This article examines the subtleties of tailgating and how it affects cybersecurity.
Understanding Tailgating
In terms of cybersecurity and physical security, tailgating is the act of an unauthorized individual entering a restricted area by trailing closely behind an authorized person. This security breach happens when someone without the right authorization or credentials takes advantage of the deference or confidence shown by an authorized person to sneak into a secure area. Below is a summary of the essential components:

- Physical Security Breach: Tailgating is the act of circumventing physical security measures that are intended to restrict entry to a designated location. Offices, server rooms, data centers, and any other restricted areas may fall under this category.
- Unauthorized Access: The person tailgating does not have the appropriate authorizations, access cards, or credentials to enter the restricted area.
- Exploiting Human Behaviour: Tailgating frequently takes advantage of people’s innate tendency to be polite or keep doors open for others, which enables the uninvited person to enter alongside an authorized one.
- Risk to Security: A tailgating enthusiast may introduce physical devices, commit theft, sabotage, or obtain sensitive data while they’re inside.
- Combination of Physical and Cyber Threats: Tailgating is often connected to physical security, but it can also be a component of a larger plan in which physical security failures allow for the entry of cyber threats. For example, digital systems could be compromised if an unauthorized person gained access to a server room.
Strict access restrictions, employee security protocol training, technology solutions (such as turnstiles, biometrics, or access control systems), and building a security-conscious culture inside an organization are all necessary to prevent tailgating. The objective is to increase overall security measures by reducing the likelihood that unauthorized people would physically enter secure locations.
How Does It Work?
Tailgating, sometimes referred to as piggybacking, is a social engineering tactic in which an authorized individual is closely followed to obtain unauthorized access to a secured area. The technique depends on taking advantage of people’s innate civility or trust, particularly in settings where people frequently hold doors open for those behind them. This is how tailgating usually operates:
- Observation: A person with the authorization or access rights to enter a secured area is observed and identified by tailgaters. Someone accessing a server room, a building, or any other restricted area could be an example of this.
- Timing: The person who is tailgating waits for an opportunity to closely follow an authorized individual, usually by holding a door open or momentarily disabling the access control system.
- Deception: To look unnoticeable, the tailgater may use a variety of strategies, such as feigning to be on the phone, toting a heavy load of documents, or dressing in an outfit that matches that of an employee.
- Quick Entry: The tailgater enters the secured area quickly after the authorized person opens the entrance, bypassing the necessary access control procedures and showing no valid credentials.
- Blend-In Techniques: To allay suspicions and improve their chances of being granted admission, tailgaters occasionally disguise themselves as delivery people, maintenance personnel, or other service providers.
- Security Bypass: Tailgating is an attempt to get over physical security barriers, such as turnstiles, access control systems, or security guards, without setting off alarms or attracting notice.
A combination of employee awareness and technology is needed to prevent tailgating. Strict entry restrictions and employee education regarding the hazards are just as important as access control systems with features like biometrics, turnstiles, and security cameras. Security staff need to be on the lookout for people without the right credentials and stress the need to prevent unwanted access.
Impact of Tailgating
Tailgating can have a significant negative influence on security, jeopardizing the integrity of both physical and, occasionally, digital environments. Tailgaters can enter restricted locations without authorization by taking advantage of human behavior and the civility shown by authorized personnel. There are a lot of hazards associated with this, such as sabotage, theft, and the possible compromising of private data. Tailgating can have serious repercussions, including the compromise of sensitive data and digital infrastructure in high-security settings like data centers or corporate offices. A comprehensive strategy that includes technology solutions, stringent access controls, and employee awareness programs to promote a security-conscious culture is needed to prevent and lessen the effects of tailgating.

Best Practices
A combination of technical solutions, procedural restrictions, and personnel awareness is needed to implement effective precautions against tailgating. Organizations can improve overall physical security and build a stronger defense against tailgating by integrating these best practices. To keep ahead of new threats, security measures must be reviewed and adjusted regularly. The following are recommended practices to help reduce and avoid tailgating:
Access Control:
Install access control devices, such as key fobs, smart cards, or biometric scanners, that demand individual authentication. Employ mantraps or turnstiles that only permit one person to pass through at a time. To find gaps and flaws in access control systems, do routine security evaluations. Revise security protocols in light of assessment results and changing threat environments.
Security Alertness:
Place security guards at entrances to visually confirm visitors’ identities before they access restricted areas. Teach security officers to confront and interrogate people who don’t have the right paperwork or authorization. Install security cameras at entry points to keep an eye on and document activity related to access. To identify odd behavior, such as many people entering with the same credentials, use video analytics.
Awareness and Training:
Provide staff with frequent security awareness training to inform them of the dangers of tailgating and the significance of stringent access control. Encourage staff members to report unauthorized persons and suspicious activity. Use physical barriers to control entrance and stop illegal drivers from tailgating, such as gates, turnstiles, or revolving doors.
Clear Signage:
Put up conspicuous signage warning staff not to open doors for people, especially strangers. Signage can be used to convey the significance of adhering to access control protocols. Make sporadic inspections or audits to make sure staff members are adhering to access control protocols. Examine access logs regularly to spot any irregularities or behavioral trends.
Tailgating Policies:
Create and disseminate explicit tailgating policies that spell out the repercussions for going against access control protocols. Include tailgating prevention in the organization’s overall security policy. Establish a comprehensive system for managing visitors, requiring them to register, obtain appropriate identification, and be escorted by authorized staff members.
Conclusion
Tailgating demonstrates that even the most sophisticated digital defenses can be thwarted by a straightforward physical intrusion, a fact that is frequently disregarded in the broad context of cybersecurity. Organizations must acknowledge the possible hazards linked to tailgating and institute all-encompassing security protocols that include both the digital and physical domains. Organizations may bolster their defenses against this unexpected threat by combining technology, education, and close observation; this will boost their cybersecurity posture and safeguard important assets.