An Efficient Geolocation Method for Malicious LBSD Users Based on Dynamic Adjustment of Probes

Table1

Typical social platforms with LBSD service.

Social platforms	Number of active users (millions)	Distance	Minimum reported distance	Random noise	Restriction
WeChat	1241.6	√	100 m	√	Time/range/frequency
QQ	606.4	√	100 m	√	Time/range
Telegram	500	√	1 m	√	Time/range
Line	220	√	100 m	√	Range/time
Momo	115.5	√	10 m	√	No
TanTan	26	√	100 m	√	Range
Skout	10	√	0.5mile	√	No
Grindr	8	×	N/A	×	Range
SayHi	N/A	√	10 m	×	Range