Isaca Cybersecurity-Audit-Certificate Exam Actual Questions

An insecure wireless connection, such as one that lacks encryption, can allow unauthorized individuals within range to intercept the data being transmitted. This interception is known as eavesdropping. It is a common security risk associated with wireless networks where attackers can capture sensitive information without being detected.

DNS data exfiltration poses a significant threat to mobile computing mainly because it is challenging to differentiate between malicious activity and legitimate DNS traffic. Attackers can exploit this by embedding data within DNS queries and responses, which often go unnoticed because DNS traffic is generally allowed through firewalls and security systems without triggering alerts. This method of data theft can be particularly effective in mobile computing, where devices frequently switch networks and rely on DNS for connectivity.

Reference= ISACA's resources on cybersecurity risks associated with DNS highlight the difficulty in detecting DNS data exfiltration due to its ability to blend in with normal traffic.This is further supported by industry resources that discuss the challenges in identifying and preventing such exfiltration techniques1234.

Tracing the access and origin of an intrusion is crucial for performing a root cause analysis. This process involves identifying the underlying factors that led to the security breach. By understanding how the intrusion happened, organizations can better address the specific vulnerabilities that were exploited and implement more effective security measures to prevent similar incidents in the future.

A Virtual Private Network (VPN) provides additional protection to messages transmitted using portable wireless devices by creating a secure and encrypted tunnel for data transmission. This helps protect the data from being intercepted or accessed by unauthorized entities. While encryption secures the content of the messages, a VPN secures the transmission path, adding an extra layer of security.

In the context of network communications, the two types of attack vectors are ingress and egress. Ingress refers to the unauthorized entry or access to a network, which can include various forms of cyberattacks aimed at penetrating network defenses.Egress, on the other hand, involves the unauthorized transmission of data out of a network, often as part of data exfiltration efforts by attackers1.