Unicode obfuscation is a technique used by cyber attackers to hide malicious code or commands by inserting invisible or non-standard Unicode characters. These characters can alter how code appears to humans or security tools, making it harder to detect threats. For example, attackers might use lookalike letters or invisible spaces to disguise malware, evade filters, or bypass security checks. This method exploits the vast range of characters in the Unicode standard, which supports thousands of symbols, many of which look similar or are not easily visible. As a result, Unicode obfuscation poses a significant challenge for cybersecurity defenses, requiring advanced detection methods to identify hidden threats.