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What is cyber insurance and how does it work?
Cyber insurance is a type of coverage designed to protect businesses and individuals from the financial losses usually caused by cyber incidents. As data breaches, ransomware attacks, and online fraud...
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What is the SMTP protocol, and how does it work?
The Simple Mail Transfer Protocol (SMTP) is the standard protocol for sending and relaying email across the internet. When an email is sent, the email app (or webmail) submits the message to an outgoi...
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What does nslookup do? A practical guide
Nslookup is a network troubleshooting utility that queries Domain Name System (DNS) servers to retrieve information about domain names and IP addresses. The nslookup command can be useful, but you sho...
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What is FileRepMalware, and should you remove it?
FileRepMalware is a detection label used by some cybersecurity tools when they encounter a file with little or no established reputation. It means the software doesn’t have enough historical data to...
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What is Conti ransomware, and how does it work?
Few ransomware operations have achieved the notoriety and scale of Conti. Between 2020 and early 2022, the group reportedly earned hundreds of millions of dollars while attacking hospitals, government...
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What is cyberwarfare and why does it matter?
Digital systems now sit at the center of government, military, and economic activity, making networks and data an increasingly important arena for competition and conflict. Cyber incidents can carry s...
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What is a DNS flood attack? Understanding its impact and how to prevent it
A DNS flood attack is a type of distributed denial-of-service (DDoS) attack that targets the Domain Name System (DNS), the service responsible for translating domain names into IP addresses. By overwh...
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What is SysJoker malware? Risks, detection, and prevention
Some malware doesn’t cause immediate disruption or obvious signs of compromise. It runs in the background and resembles normal system activity, which can delay detection. When a threat isn’t ident...
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How to fix “Apple could not verify app is free of malware”
You’ve downloaded an app, double-clicked it, and macOS stops you with a message: “Apple couldn’t verify the app is free of malware.” You might also see variations like “Apple cannot verify t...
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What is DNS spoofing? Learn how it affects your security
Websites are hosted on servers identified by IP addresses, but you access them by typing domain names. Domain Name System (DNS) translates names like example.com into the numeric addresses your device...
Cybersecurity
