1. Net Neutrality: The repeal of net neutrality regulations by the Federal Communications Commission (FCC) stirred significant controversy over concerns of potential discrimination and censorship by internet service providers.

2. Facial Recognition Technology: The use of facial recognition technology by law enforcement agencies and tech companies has sparked debates surrounding privacy, surveillance, and potential bias or misidentification.

3. Encryption Backdoors: Proposals to create backdoors in encryption systems to enable law enforcement access to private communications have raised concerns about the erosion of privacy and the potential for misuse of these vulnerabilities.

4. Data Protection and Privacy Laws: The implementation of new data protection laws, like the European Union’s General Data Protection Regulation (GDPR) or the California Consumer Privacy Act (CCPA), has been controversial due to concerns over compliance costs and limitations on data collection and usage.

5. Online Content Moderation: The policies and practices of social media platforms, particularly regarding the moderation and removal of content, have sparked controversy over censorship, freedom of speech, and alleged bias in content regulation.

6. Cybersecurity Policies: Surveillance measures and government access to personal data in the name of national security have raised concerns about the balance between privacy and security, as well as potential abuse of power.

7. Artificial Intelligence Ethics: The lack of regulation and guidelines around the development and use of artificial intelligence (AI) technologies has sparked debates about bias, transparency, and accountability in automated decision-making systems.

8. Election Interference: The response of tech companies to combat misinformation and foreign interference in elections has faced criticisms from different stakeholders, who argue that they are either not doing enough or are overreaching in content removal.

9. Digital Taxation: The introduction of digital taxation policies to ensure tech companies pay their fair share of taxes has led to controversies regarding international tax laws, jurisdiction, and the impact on innovation and market competition.

10. 5G and National Security: Concerns surrounding the deployment of 5G technology and its potential association with foreign powers have sparked debates on national security risks, strategic partnerships, and international influence in critical infrastructure.