common threats to transaction security?

Common threats to transaction security include:

1. **Fraud:** Unauthorized access or manipulation of transaction data for financial gain.

2. **Phishing:** Deceptive attempts to obtain sensitive transaction information through fake communications.

3. **Man-in-the-Middle Attacks:** Interception and alteration of transaction data between parties.

4. **SQL Injection:** Malicious insertion of code into database queries to access or corrupt transaction data.

5. **Data Breaches:** Unauthorized access to transaction data due to vulnerabilities in systems or processes.