Always consider the rights of the content creators. Downloading copyrighted material without permission can be illegal. Look for content that is licensed under Creative Commons or is explicitly stated to be free for download.
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In the US, UK, and Australia, voyeurism is a felony. The (US) imposes fines and up to 1 year in prison for filming someone undressed without consent—even in a public place where they expect privacy, like a changing room or bathroom.
: Update the credentials for your critical accounts (email, banking, social media) from a secure device.