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Which feature is commonly found in modern anti-virus software to help with real-time threat detection?
Manual updates
Cloud-based detection
Offline scanning
Passive scanning
Cloud-based detection
Cloud-based detection allows anti-virus software to offload the heavy computational task of analyzing suspicious files to remote, high-capacity servers. This enables real-time threat identification by comparing file signatures against a vast, constantly updated global database of threats.
Cloud-based detection allows anti-virus software to offload the heavy computational task of analyzing suspicious files to remote, high-capacity servers. This enables real-time threat identification by comparing file signatures against a vast, constantly updated global database of threats.
Think of it like a local librarian (your computer) having a tiny book of common criminals, whereas cloud detection is like having a direct phone line to the FBI's national database for instant verification of anyone suspicious.
C.R.E.D: Cloud Real-time Efficient Detection.
H=f(data) тАФ where H is the cryptographic hash of a file, representing its unique signature for identification.
When a suspicious file is detected, the antivirus generates a fingerprint (hash) of the file and sends it to a cloud server using protocols like HTTPS. The server compares this hash against a centralized database containing millions of known malicious signatures. If the hash matches a threat, the cloud server sends a signal back to the client software to isolate or delete the file, ensuring the local machine remains protected without requiring a massive local database.
Reduces the processing load (CPU and RAM) on the local computer.
Ensures instant protection against 'zero-day' vulnerabilities without waiting for a manual software update cycle.
Uses cryptographic hashing to maintain data privacy while verifying file integrity.
Lower performance impact on local hardware
Near-instant updates to threat intelligence
Small installation footprint
Requires an active internet connection for maximum effectiveness
Privacy concerns regarding metadata transmission
Endpoint Protection Platforms (EPP)
Mobile security applications
Email filtering gateways
Option A (Manual updates) is inefficient and lags behind rapidly evolving malware.
Option C (Offline scanning) is essential for air-gapped systems but lacks the latest threat intelligence updates.
Option D (Passive scanning) refers to scanning only when triggered, which does not provide active, real-time protection.
B is correct тАФ Cloud-based detection provides real-time, instantaneous intelligence by utilizing centralized, high-performance servers to identify and neutralize threats.
In computer science exams, always associate 'Cloud' with 'Centralization of resources' and 'Scalability', which is a recurring theme in modern distributed computing.
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