If you accidentally click on a phishing link, immediate action is crucial to protect your digital assets and personal information. First, disconnect from the internet to prevent further data compromise. Next, reset all passwords and enable two-factor authentication (2FA) to enhance security. Conduct a thorough malware scan on your device to detect and remove any malicious software. Additionally, monitor your accounts closely for any suspicious activity and report the incident to relevant authorities or platforms to help prevent further attacks.