What a SHA-256 hash can prove
A SHA-256 fingerprint can prove byte-for-byte identity with a known hash. It cannot tell you by itself whether the matched file is safe, malicious or compromised.
Labs focuses on defensive gaming-security research and clear explanations. It does not publish real malware samples or turn research pages into malware distribution.
A SHA-256 fingerprint can prove byte-for-byte identity with a known hash. It cannot tell you by itself whether the matched file is safe, malicious or compromised.
Static inspection studies a file without executing it. Behavioral analysis observes what code does inside an isolation boundary. Each catches things the other can miss.
A security verdict is bounded by available detectors, file coverage, intelligence and runtime evidence. Responsible tools explain uncertainty instead of hiding it.
This is a defensive scenario, not a claim about a specific real-world incident. A familiar filename, launcher approval, or popular original project does not prove that a downloaded copy is byte-for-byte identical to the trusted release.
An attacker can distribute a modified copy while preserving the original name, branding or expected archive structure. The risky part may be only one added component.
Compare trusted hashes when available, verify the download source, inspect structure before use, and escalate suspicious or inconclusive files to deeper analysis rather than treating familiarity as proof.
A copied name and familiar interface do not prove that a download matches the developer's original bytes. This defensive walkthrough explains the trust gap without distributing harmful samples.
MalGuard's repository policy requires harmless synthetic fixtures for tests and forbids adding, downloading or executing real malware in development or CI.
Host-specific isolation, browser behavior and release guarantees should only be claimed when the required evidence exists. Missing evidence should stay visible.
These guides explain how to interpret security signals; they are not product certifications or live malware tests.
Source provenance, SHA-256 limits, real file types, security prompts and what to do when evidence is incomplete.
SAFE, SUSPICIOUS, MALICIOUS and INCONCLUSIVE: evidence, false positives and why unknown is never safe.
Five educational articles with primary reference links, including a Persian guide. They explain security concepts and honest evidence limits rather than making unsupported claims about MalGuard detection accuracy.
Publisher identity, SHA-256 integrity and SmartScreen reputation are separate signals.
Extensions, archive structures, unseen files and limits of non-executing inspection.
Check domains, redirects, deceptive prompts and what link scans do not prove.
First PRs, harmless fixtures, transparent tests and private vulnerability reporting.
تفاوت هش فایل، اعتبار امضا و هشدارهای ویندوز.