: RAR archives can include a "recovery record," which helps repair the file if it becomes slightly corrupted during download.

: RAR files often support password protection to keep internal data secure. If you don't have a password, you may not be able to access the contents. Technical Features of .RAR Archives

: Before extracting, run the file through a reputable scanner like Malwarebytes or upload it to VirusTotal to ensure it doesn't contain trojans or spyware.