व्यापक रूप से, नेटवर्क सुरक्षा प्रणालियों में घुसपैठ से संबंधित सुरक्षा समस्याओं (Intruders) की कितनी प्राथमिक श्रेणियां मानी जाती हैं (जैसे, मैस्करेडर, हैकर्स आदि)?

Which of the following actions is NOT performed by malware?

Deceptive programs that appear to perform one useful function, but secretly perform malicious activities, are known as:

Which of the following can be categorized as malicious software (malware)? I. Spyware II. Keyloggers III. Ransomware IV. Trojan horses