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Additional details can be found in our transparency report. This obligation however does not extend to ProtonVPN (see VPN privacy policy here). If you are breaking Swiss law, ProtonMail can be legally compelled to log your IP address as part of a Swiss criminal investigation.
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The legal basis of this processing is our legitimate interest to protect our Services against nefarious activities. However, IP logs may be kept temporarily to combat abuse and fraud, and your IP address may be retained permanently if you are engaged in activities that breach our terms and conditions (spamming, DDoS attacks against our infrastructure, brute force attacks, etc). IP Logging: By default, we do not keep permanent IP logs in relation with your use of the Services. In fact it is perhaps worth just quoting the section of their privacy policy:
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