Hosting Metadata Leakage vs Data Exfiltration: How Dangerous Is It for Your Website?

Did you know that small hosting issues could actually put you at risk? When I first became aware of metadata leakage, I thought to myself, “It’s just some metadata, what’s the big deal?” After going through the experience, however, I found out that it really isn’t any less risky than having actual stolen data.

What Is Metadata Leakage?​

Metadata is defined as information on your data which does not represent the information itself. But it rather provides an indication of who accessed the files, when, and from what location. Leaving little pieces of metadata behind is similar to leaving little clues behind, and giving someone the ability to figure out your secrets.

What’s the Difference Between Data Exfiltration and Metadata Leakage?​

Data exfiltration refers to the act of stealing files, while metadata leakage is quiter. However, it still has the potential to cause problems because:

• Planned attacks are easier due to patterns indicating where to focus attention.
• Patterns associated with specific activity give clues as to which files are worth trying to steal.
• Any type of leakage (including a lack of data protection) could be considered a violation of compliance.

The last example I mention is actually nothing more than an instance of using metadata to help an attacker plan an attack without needing to access the actual data.

How Serious is Metadata Leakage?​

You should be concerned about it, so take steps to secure metadata now before you experience an issue.

Final Thoughts on Preventing Future Metadata Leakage​

You should be worried about metadata leakage? Then the answer is Yes, since it can have far greater consequences than simply stealing data. Therefore, the next time you host or share files, remember that there are small, invisible pieces of information that come along with everything you do on the internet.