Steganography attacks hide information inside ordinary digital media such as images, audio tracks, video clips or text files, so the hidden content goes undetected. MITRE ATT&CK lists this as technique T1027.003, Steganography. NIST defines steganography as communicating in a way that hides the existence of the communication.
Last checked against sources: October 10, 2026.
What Is Steganography and How Do Attackers Use It?
NIST defines steganography in one of its publications (SP 800-86) as embedding data within other data to conceal it. Attackers apply the idea to files that look harmless. MITRE ATT&CK says adversaries use steganography to prevent the detection of hidden information, and it gives Duqu as an early example: the malware encrypted victim data and embedded it within images before sending it to command-and-control servers.
The MITRE ATT&CK page lists more than 30 real cases. They include PowerShell code hidden in PNG files with the Invoke-PSImage tool, malware extracted from photos, encrypted payloads in BMP and PNG images, and shellcode placed in audio files. The common thread is that the carrier file opens normally, so a person or a simple filter sees nothing wrong.
Why Can Steganography Attacks Not Be Blocked with Preventive Controls?
MITRE ATT&CK states that this type of technique cannot easily be mitigated with preventive controls because it is based on the abuse of system features. Images, audio and video are allowed on almost every network, and blocking them is not realistic. That is why detection matters more than prevention for this technique.
How Are Steganography Attacks Detected?
MITRE ATT&CK describes three detection ideas. The first is an image viewer or a PowerShell script opening a file whose real content does not match its file type header. The second is an unusual chain of parent and child processes that ends in an outbound network connection. The third is scripts that call steganography tools such as steghide, exiftool or image libraries.
Teams usually turn these ideas into rules and indicators. Our guide to YARA and Sigma rules explains how detection rules are written, the post on effective YARA rules shows how to keep them accurate, and the glossary entry on indicators of compromise explains what to collect once a carrier file is found.
What Will You Find In This Report On Steganography Attacks?
Learn All Technical Details
The technical details of the steganography attack, its working methods, historical changes and more. The report will show many points about the its technical details, detections, YARA Rules, and IoCs.
Gain Knowledge About Future Attacks
By understanding the attack, you can make more informed predictions about the future of cybersecurity. Stay up-to-date with the latest trends and keep your business from potential threats.
Response & Mitigation Tactics From Experts
Brandefense analysts share practical response and mitigation advice on this topic. This attack tactic has been increasingly active and sophisticated in recent years, making it more difficult for companies to protect themselves.