What coding methods can prevent steganography attacks within image files

0 votes
I’m researching ways to secure image uploads against steganography, where attackers might hide sensitive data or commands within images. I’d like to know what programming techniques or methods could prevent such data from being embedded in images, or to detect steganographic content if it’s already present.

If there are specific libraries, scanning methods, or restrictions to apply to images during the upload process, I’d appreciate recommendations on best practices.
Nov 6 in Cyber Security & Ethical Hacking by Anupam
• 5,070 points
38 views

1 answer to this question.

0 votes

To prevent or detect steganography attacks within image files, you can implement various coding methods that focus on blocking or identifying hidden data.

1. Remove Metadata

  • Strip EXIF and metadata during upload to prevent hidden data.
  • Use libraries like Sharp in Node.js to do this.
sharp(imageBuffer).withMetadata(false).toFile(outputPath);

2. Limit Image Size/Dimensions

  • Set strict file size limits and check for unusual image dimensions.
  • Example: Limit file size to 5MB and dimensions to typical ranges (e.g., 300x300 to 5000x5000).

3. Use Steganalysis Tools

Tools like StegExpose detect hidden data in images by checking for anomalies.

stegexpose -p file.jpg

4. Convert to Uncompressed Format

Convert images to uncompressed formats (e.g., BMP) to strip hidden data from compressed formats like JPEG.

sharp(imageBuffer).toFormat('bmp').toFile(outputPath);

5. Verify MIME Type and Extension

Check file MIME type and extension to avoid malicious file uploads masquerading as images.

const mimeType = mime.getType(filePath);
if (mimeType !== 'image/jpeg' && mimeType !== 'image/png') {
    throw new Error("Invalid file type");
}
answered Nov 7 by CaLLmeDaDDY
• 6,360 points

Related Questions In Cyber Security & Ethical Hacking

0 votes
1 answer
0 votes
1 answer
0 votes
1 answer
+1 vote
1 answer

How do you decrypt a ROT13 encryption on the terminal itself?

Yes, it's possible to decrypt a ROT13 ...READ MORE

answered Oct 17 in Cyber Security & Ethical Hacking by CaLLmeDaDDY
• 6,360 points
113 views
+1 vote
1 answer
+1 vote
1 answer
+1 vote
1 answer
+1 vote
1 answer
0 votes
1 answer
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP