There are various indicators that a cybersecurity attack is taking place. Unusual behavior on your computer or network, such as programs launching or closing on their own, changes to system settings, and unexpected network activity, are all classic warning indicators.
You might also notice that your computer or network is functioning slower than usual, or that you're getting strange pop-ups, error messages, or warnings.
You may also receive phishing emails or SMS messages or discover that your credentials are no longer functioning. If you discover any of these indicators, you must act quickly to protect your data and systems from additional damage.