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They do it out of habit and outdated compliance requirements. Current expert guidance advises against it, and the reversal is now well established among standards bodies. The original reasoning. If a
Lossless compression can reconstruct the original data exactly. Lossy compression discards information permanently to achieve much smaller files. Lossless works by finding and encoding redundancy
A zero-day is a security flaw that the vendor does not yet know about, or has known about for zero days — so no patch exists and defenders have had no opportunity to prepare. The related terms are
In data centres — large buildings full of servers, owned by a handful of companies, in specific geographic locations. There is nothing ethereal about it. "The cloud" is a marketing term for someone
Not necessarily, and the confusion comes from English using one word for two different things. The standard clarification is "free as in speech, not free as in beer". Open source means the source
A surprising amount, in well under a second. The sequence is one of the most useful things to understand about how the internet works. The browser checks its caches. Browser cache, then the operating
Malware is the umbrella term for any software written to cause harm. Everything else is a category within it, and the distinctions are about how it spreads or what it does. Categories by how they
Less than the advertising implies, and the honest description is narrow: a VPN encrypts traffic between your device and the VPN server, and replaces your IP address with the server's. What it
The core detection engine is usually the same in both tiers from a given vendor. Paid versions add features around it rather than better malware detection, which is the opposite of what the marketing
A firewall decides which network traffic is allowed through based on rules. The important distinction is direction, because inbound and outbound filtering solve completely different problems and
Modern browsers deliberately trade memory for speed and stability, and a high figure is not automatically a problem. Each tab, and often each extension, runs in its own process so that one
A passkey replaces the password with a cryptographic key pair. The private key stays on your device, protected by your fingerprint, face or device passcode. The site stores only the public half,
Breaches are usually discovered by researchers or disclosed by the company long after the event, so the practical question is not whether you were affected but whether you have responded to the ones
The warning has two quite different causes, and the distinction matters because one is routine and the other should stop you. The milder case is a site served over plain HTTP with no encryption at
End-to-end encryption means content is encrypted on the sender device and decrypted only on the recipient device. The service carrying it holds only ciphertext and cannot read the contents, even
Most successful attacks exploit vulnerabilities that were fixed months or years earlier. The window that matters is not between discovery and patch, it is between patch and installation, and that
Modern phishing is well written and often visually indistinguishable from the real thing, so advice based on spotting bad spelling is out of date. The reliable signals are structural rather than
The cache stores copies of files a site has already sent you, such as images, stylesheets and scripts, so a return visit loads from your disk instead of the network. Clearing it deletes those copies,
Two-factor authentication requires something beyond your password, so a stolen password alone is not enough. The methods differ considerably in how much protection they actually provide, and they are
The concern people raise is reasonable: putting every credential in one place seems to create a single point of failure. In practice a password manager is a very large improvement over the realistic
Sync keeps the same set of files identical across several places. Backup keeps a separate copy of your files as they were at points in the past. The difference sounds small and is not, because sync
Troubleshooting operating system errors involves methods like restarting, checking updates, and using built-in tools. Each method targets specific issues effectively.
Understanding common IoT device vulnerabilities is crucial for enhancing security. Key issues include weak authentication, insecure communication, and outdated firmware.
Blockchain technology use cases span supply chain, finance, healthcare, voting, identity verification, and intellectual property, enhancing security and efficiency.