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In Excel and Word 95 and prior editions a weak protection algorithm is used that converts a password to a 16-bit verifier and a 16-byte XOR obfuscation array [1] key. [4] Hacking software is now readily available to find a 16-byte key and decrypt the password-protected document.
Thunder Tables is the company's own technology developed to ensure guaranteed recovery of Microsoft Word and Microsoft Excel documents protected with 40-bit encryption.The technology first appeared in 2007 and employs the time–memory tradeoff method to build pre-computed hash tables, which open the corresponding files in a matter of seconds instead of days.
A backdoor is a typically covert method of bypassing normal authentication or encryption in a computer, product, embedded device (e.g. a home router), or its embodiment (e.g. part of a cryptosystem, algorithm, chipset, or even a "homunculus computer"—a tiny computer-within-a-computer such as that found in Intel's AMT technology).
An online password suddenly doesn’t work anymore; ... Check your credit report – If a hacker sets up a new account in your name, chances are that you won’t notice until you check your credit ...
Change your password immediately. 2. Delete app passwords you don’t recognize. 3. Revert your mail settings if they were changed. 4. Ensure you have antivirus software installed and updated. 5. Check to make sure your recovery options are up-to-date. 6. Consider enabling two-step verification to add an extra layer of security to your account.
While we continuously monitor for suspicious activity, you also play an important role in keeping your account secure by following safe online practices. Learn how you're notified and what to do to secure it from government-backed actors or hackers.
In the simple case where the reduction function and the hash function have no collision, given a complete rainbow table (one that makes sure to find the corresponding password given any hash) the size of the password set |P|, the time T that had been needed to compute the table, the length of the table L and the average time t needed to find a ...
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