Media type: E-Article Title: DDoS Attacks at the Application Layer: Challenges and Research Perspectives for Safeguarding Web Applications Contributor: Praseed, Amit; Thilagam, P. Santhi imprint: Institute of Electrical and Electronics Engineers (IEEE), 2019 Published in: IEEE Communications Surveys & Tutorials Language: Not determined DOI: 10.1109/comst.2018.2870658 ISSN: 1553-877X; 2373-745X Origination: Footnote: