![]() If you want to share PDF files securely, then using obvious passwords is not going to provide much protection. ![]() Typical passwords NOT to use include: 123456, 123456789, password. The process takes maybe a few minutes for thousands of passwords. Dictionary attacks use a massive database of popular and common passwords and try all of them to see if any work. They use various methods to remove a password from a PDF, such as dictionary attacks. PDF cracking programs are highly effective in decrypting PDF files and many of them are available for free. ![]() They encrypt the content of a PDF file and hope that no one figures out how to decrypt it.” One might ask: how did PDF password remover tools become so effective? This article provides a clue – “Adobe’s PDF protection scheme is a classic example of security through obscurity. However, as with all applications, they were quickly misused to help unauthorized users unlock a PDF or remove permissions so that they can copy and share the document. Here, it is important to mention that PDF password protection remover tools were initially invented to be used only under appropriate circumstances – that is, only if the original creator has lost the password or the user has a legal right to view and modify the PDF but does not have it. Numerous tools to remove a password from PDF can be used to gain access to a PDF despite a lost password.
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