1. Identity Theft: Can use your personal details to impersonate you, opening bank accounts, taking out loans, or making purchases in your name. 

2. Social Engineering Attacks: With enough personal information, hackers can craft convincing phishing or social engineering attacks, tricking you or others into divulging even more sensitive information, such as passwords or security codes 

3. SIM Swap Fraud: SIM swap, gaining control of your phone line to intercept SMS-based two-factor authentication codes and access your online accounts. 

4. Bank Account Breaches: With your BVN, hackers can attempt to gain unauthorized access to your bank account, either by trying to guess your passwords or by using social engineering techniques to reset them. 

5. Unauthorized Loan Applications: Hackers can use your BVN and personal details to apply for loans in your name, leaving you to deal with the debt and the damage to your credit score. 

6. Blackmail and Extortion: Hackers might threaten to release or misuse your personal information unless you pay a ransom, or they may use the information to coerce you into doing something against your will. 

7. Credential Stuffing: They can use your personal details to attempt to access your accounts across various platforms through credential stuffing attacks. 

8. Social Media Account Takeover: With your phone number and personal details, hackers can try to reset the passwords to your social media accounts, gaining control of them for malicious activities, including posting inappropriate content or scamming your contacts. 

9. Fake Identity Creation: Hackers can use your personal details to create fake identities for various criminal activities, including money laundering or other fraudulent schemes. 

10. Spam and Scam Calls: Hackers can use your phone number and other details to sign you up for unwanted services, inundating you with spam calls and messages, or they could sell your information to other scammers. 

Solutions to Prevent Hacking:
 

1. Use Strong, Unique Passwords: Create complex passwords that include a mix of letters, numbers, and special characters. Avoid using easily guessable information like birthdays or common words. Use different passwords for different accounts. If one account is compromised, others remain secure.
2. Enable Two-Factor Authentication (2FA): Add an extra layer of security by requiring a second form of verification (e.g., a text message code or authentication app) to access your accounts.
3. Be Cautious with Phishing Scams: Be wary of unsolicited emails, texts, or calls asking for personal information. Hackers often impersonate trusted entities to trick you into revealing sensitive information. Verify the source before clicking on any links or downloading attachments.
4. Keep Software and Devices Updated: Regularly update your operating system, apps, and antivirus software to protect against the latest security vulnerabilities.
5. Limit Sharing of Personal Information: Be mindful of the information you share online, especially on social media, loan apps. Hackers can use seemingly harmless details to build a profile and guess your passwords or security questions.
6. Monitor Financial Statements: Regularly review bank and credit card statements for any unauthorized transactions. Report any suspicious activity immediately.
7. Use Secure Networks: Avoid using public Wi-Fi for transactions involving sensitive information. If necessary, use a VPN (Virtual Private Network) to encrypt your connection.
8. Secure Your Devices: Use passcodes or biometric authentication to lock your devices. Install a reliable security app to protect against malware and unauthorized access.
9. Limit Access to Sensitive Information: Only share your BVN, date of birth, and other sensitive details with trusted institutions. Be cautious when asked for this information online or over the phone.
10. Educate Yourself and Stay Informed: Stay informed about the latest cybersecurity threats and best practices. Continuous learning can help you recognize and avoid new types of attacks.

By implementing these precautions, you can significantly reduce the risk of hackers accessing and misusing your personal and financial information.