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While cyber attacks remain a persistent, year-round threat to organizations, cybersecurity professionals have discovered patterns in the frequency and intensity of attacks throughout the year. These attacks are influenced by various factors, including economic cycles, sporting events, and even the seasons. Understanding these patterns can help organizations prepare and reinforce defenses during high-risk periods. Here's a detailed look at when organizations are most vulnerable to cyber attacks.

Username enumeration (sometimes called account enumeration) is when it is possible for a hacker to confirm whether a given username is valid for a system. If a malicious actor can gather valid usernames on a platform, they can then use brute force attacks such as credential stuffing or guessing to compromise associated accounts. The collected usernames can also be sold to other spammers and hackers or used in social engineering attacks against the users themselves.