Dictionary attacks: Same concept as common word attacks - the only difference is that the hacker now uses the full dictionary of words (there are about 500,000 words in the English language)."sum, summer, summit, sump, sun (MATCH)". Instead of trying different combination of letters, the hacker tries different words e.g. Common word attacks: A simple form of brute-force attacks, where the hacker attempt to sign-in using a list of common words.The only thing that stops a brute force attack is higher complexity and longer passwords (which is why IT people want you to use just that). If you password is "sun", he will attempt to sign-in using "aaa, aab, aac, aad. A hacker simply attempts to sign-in using different passwords one at the time.
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