Table 2. CPA detection and mitigation.

References	NDN node	Detection	Mitigation	Overhead
Gasti et al. (2012)	Consumer, Router	Signature, PPKD	SSCIC, DSCIC	Verification of random signatures
Ghali, Tsudik & Uzun (2014a)	Consumer	Signature	Content ranking	Content ranking calculation
Ghali, Tsudik & Uzun (2014b)	Router	PPKD and signature	Interest key binding	Signature verification
Nam, Kim & Yeom (2015)	Router	Signature	SLRU extension	Signature verification
Kim et al. (2015)	Router	Signature	SLRU extension	Signature verification
Wu et al. (2016)	Consumer, router	Signature	Reputation based forwarding	Signature verification
Kim et al. (2017)	Router	Signature in case of cache-hit	SLRU extension	Signature verification
DiBenedetto & Papadopoulos (2016)	Consumer, router	Signature	Modified forwarding strategy	Complete Bogus packet in reissued interest packet
Hu et al. (2018)	Consumer, router	PPKD and signature	Name-key based forwarding and multipath forwarding based inband probe	Signature verification (Hash matching is fast due to PPKD entry)