Every association handles at least two types of confidential data. The first is personal data about members, such as their address, email, and phone number. The second type is financial data. Beyond that, associations can of course have plenty of other kinds of data, such as event plans, legal documents, and more. If you store this data online, you need to make sure it is properly protected.

In this blog post, we will explore two methods that help protect data from unauthorized access: encryption and hashing.

Encryption - Your Digital Safe

You can think of encryption as a digital safe. Just as a physical safe protects valuables from thieves, encryption protects your data from unauthorized access. When you encrypt data, you transform it into a seemingly meaningless sequence of characters that can only be read by someone who has the right key.

Imagine you are sending a list of members via email. Without encryption, it is like sending a postcard - anyone who sees it along the way can read the contents. With encryption, it is like putting the list in a locked box, and only the recipient has the key.

In practice, this means that even if someone intercepted your communication or broke into your database, they would not be able to read the contents. They would only see an incomprehensible combination of letters, numbers, and symbols.

Hashing - A Digital Seal of Authenticity

Hashing works differently from encryption. While encryption is a two-way process (you can encrypt and decrypt), hashing is one-way. Once you hash a piece of data, you cannot reverse it back to its original form.

Why is this useful? The most common example is passwords. When a member enters a password to access your portal, the system hashes it and compares it with the hashed value stored in the database. This way, you never store actual passwords - even if someone broke into your database, they would only find hashed values from which the original passwords cannot be determined.

Hashing is also excellent for verifying data integrity. For example, when you send an important document, you can also send its hash value. The recipient can then verify whether the document was altered during transfer - if the hash values match, the document remained unchanged.

How to Apply This in Practice?

In your association, you can use encryption to protect all kinds of sensitive data:

• Encrypt your member list with contact details before storing it in the cloud using a tool like 7-Zip
• Protect financial reports with a password in PDF format
• Store event plans and internal documents in encrypted folders on Google Drive
• Add extra protection to legal documents with file-level encryption

Hashing is primarily relevant for passwords:

• If you have an online portal for members, the system must hash passwords rather than storing them in readable form
• You can use hashing to verify whether an important document (e.g., minutes from a general assembly) was altered during transfer or storage - simply compare the hash value of the original with the copy

GDPR and Data Protection Legislation

Do not forget that the GDPR (General Data Protection Regulation) requires you to adequately protect personal data. This is not just a recommendation - it is a legal obligation. Unprotected personal data can result in hefty fines, and more importantly, you can lose the trust of your members.

Conclusion

Data security is not something associations can afford to ignore. By properly using encryption and hashing, you can significantly reduce the risk of data loss or theft. Start gradually - even basic protection is better than none at all.

Remember: in the digital world, a lock on the door is not enough. You need digital locks - and now you know where to find them.