The document discusses the main cybersecurity challenges faced in social computing. It identifies several key challenges: (1) big data breaches as more personal data is collected and stored; (2) the expansion of AI which could help detect cyberattacks but also poses risks; and (3) limited IT resources making it difficult for organizations to adequately monitor and secure expanding networks and devices. Additional challenges discussed include threats posed by the growing number of internet-connected devices and vulnerabilities in serverless applications. Real-world examples are provided to illustrate incidents and the potential damage from successful cyberattacks.