[Isabelle Tubbs]

Businesses today need physical security hardware devices to maintain security and safety of data and information. Three tools include intrusion detection systems, firewalls, and multi-factor authentication.
An intrusion detection system (IDS) examines the traffic on the network and then sends out an alert if it finds any malicious activity or unauthorized access (GeeksforGeeks, 2025). This is an important system to install for businesses who need to know when any attacks or unauthorized accesses happen on the system. Likewise, having a physical detection system, like surveillance cameras and sensors, is beneficial for business locations (Avigilon, n.d.).
However, to prevent attacks in the first place, firewalls are important tools for controlling the incoming and outgoing traffic. They are used to deny access to malicious users or software while also allowing known objects in. Although an intrusion detection system is helpful for alerting businesses of attacks, it is also good to have systems in place that prevent such things.
Another method for security is the way authorized users are authenticated for access. Previously in this course, we learned how multi-factor authentication can be more secure for authenticating users. It can use information (like a password), or an object (like access to an email), etc. Using more than one method can help businesses be more secure because it requires more than just a password to get in to access important information. This can apply to logging in online or even for accessing a secure building (Avigilon, n.d.).
References
Avigilon. (n.d.). What is physical security? Controls, methods, and measures for commercial buildings. Retrieved May 2, 2025 from https://www.avigilon.com/blog/physical-security-guide#key-physical-security-measures
GeeksforGeeks. (2025, April 28). Intrusion Detection System (IDS). https://www.geeksforgeeks.org/intrusion-detection-system-ids/