Risks of using voice assistants like Siri and Alexa include:

1. Exposure of personal information and data
2. Inaccurate search replies due to personalization of search engine results
3. Third-party companies' access to shared information
4. Generation of digital profiles for users
5. In-app purchases and ads without explicit consent
6. Inability to understand slang and informal registers

To protect yourself from potential risks associated with voice assistants, you can:

1. Review the app's terms and conditions
2. Change your voice assistant's settings
3. Opt out of uploading personal information and data
4. Track activity and review queries
5. Turn off in-app purchases and ads
6. Use a secure password or PIN code
7. Perform regular updates and software patches