A broad but non-exhaustive list of areas of interest is as below:

Systems Security
OS, VM, containers, cloud
Network: SDN, NFV, SD-WAN
IoT, RFID, SCADA systems
IDS, IPS, Honeypot, Botnet
Access control
Authentication, Authorization
PKI & Trust management
Zero Trust
Application Security
Vulnerabilities, Malware
Ransomware, APTs, MITRE
Information flow control
Threat Modelling, Attack graphs
Security in AI/ML
Adversarial learning/inputs
Prompt injection, RLHF strategies
Model stealing, Model poisoning
Formal Methods for Security
Verification of Security Protocols
FM for AI/ML Models & Apps
Hardware Security
Remote attestation, PUFs
Trojans, Backdoors, FPGA
TEE, TRNG, SGX
Privacy
PETs, anonymization tech
De-identification attacks
Surveillance & Censorship
Inference, correlation attacks
Blockchain
Cryptocurrency, stablecoins
Interoperability, scalability
Smart contracts, concurrency
DIDs, NFTs, CBDCs, AML
Emerging Tech/Standards
ChatGPT, LaMDA, Dall-E 2, etc
Security-by-design, SBOM
STIX/TAXII
Use Cases
e-voting, e-gov, smart cities
Healthcare, UPI payments