Web Browser Settings
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… make it possible to reduce the storage of confidential information and its transmission to third parties.
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Keep your browser up to date and install automatic updates.
Only use browser extensions, add-ons, or plug-ins that you absolutely need.
Configure your browser's security and data protection settings, including those of any extensions.
Browser Security | BSI
Modern browsers offer many functions and play important roles, making them attractive targets for criminals. If hackers gain comprehensive access, they can read or manipulate all communication. Therefore, attacks on browsers are very lucrative for criminals and extremely unpleasant for the victims.
Source: BSI