Using an Efficient Detection Method to Prevent Personal Data Leakage for Web-Based Smart City Platforms

Table 2

Statistical information for 50 websites.

Total files for one website	No. of websites	Total files of (A)	No. of files with personal data	No. of repeated personal data	Average files per website	No. of repeated personal data per website	No. of repeated personal data per file
	(A)	(B)	(C)	(D)	(B/A)	(D/A)	(D/C)
0–500	29	3,639	2,784	42,279	125	1,458	15
501–2,000	12	12,439	7,652	209,948	1,037	17,496	27
2,001–5,000	4	13,285	8,453	405,145	3,321	101,286	48
5,001–10,000	4	25,074	20,880	343,699	6,269	85,925	16
10,001–50,000	1	23,457	22,148	269,831	23,457	269,831	12
Total	50	77,894	61,917	1,270,902