Keyphrases
- low level
- denial of service attacks
- denial of service
- dos attacks
- high level
- higher level
- countermeasures
- network security
- mid level
- visual information
- low level features
- spam filters
- visual features
- traffic analysis
- security threats
- chosen plaintext
- malicious attacks
- ddos attacks
- computer security
- watermarking scheme
- watermarking algorithm
- visual cues
- machine learning systems
- lightweight
- middle level
- malicious users
- digital image watermarking
- data sets
- security protocols
- java card
- image classification
- terrorist attacks
- wireless sensor networks
- security vulnerabilities