	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q	R	S	T	U	V	W	X	Y	Z	AA	AB	AC	AD	AE	AF	AG	AH	AI	AJ	AK	AL	AM	AN
1	Homepage - About - GitHub	Amino	Briar	Cabal	Cwtch	Discord	Dust	Google Messages	Grindr DMs	GroupMe	iMessage	Instagram DMs	IRC	Kik	LINE	Matrix	Mattermost	FB Messenger	New ICQ	Outloook	Reddit DMs	Revolt	Session	SMS	Signal	Simplex	Snapchat	Status	Telegram	Teams	Threema	Tinder DMs	Twitch DMs	Twitter DMs	WeChat	WhatsApp	Wire	Xbox Live	XMPP	Zoom
2	Recommended for private communication?	No	Yes	No	Yes	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	Yes	No	Yes	Yes	No	Yes	No	No	Yes	No	No	No	No	No	Yes	No	No	No

3	End to end encrypted by default	No	Yes	No	Yes	No	No	Yes	No	No	Yes	No	No	No	No	Yes	No	No	No	No	No	No	Yes	No	Yes	Yes	No	Yes	No	No	Yes	No	No	No	No	Yes	Yes	No	Provider Specific	No
4	End to end encryption is available	No	Yes	Yes	Yes	No	No	Yes	No	No	Yes	Yes	Sometimes	No	No	Yes	No	Yes	No	No	No	No	Yes	No	Yes	Yes	No	Yes	Yes	No	Yes	No	No	Paid feature	No	Yes	Yes	No	Sometimes	No
5	Voice/video calls are end to end encrypted	No	N/A	N/A	N/A	No	N/A	Yes	No	No	Yes	No	N/A	No	No	Yes	No	No	No	N/A	No	No	N/A	No	Yes	Yes	No	N/A	Sometimes	No	Yes	No	N/A	No	No	Yes	Yes	No	Provider Specific	Yes
6	Utilizes Perfect Forward Secrecy	No	Yes	No	Yes	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	Yes	Yes	No	Yes	No	No	Yes	No	No	No	No	Yes	Yes	No	Provider Specific	No
7	Data is encrypted in transit	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Sometimes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Sometimes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Sometimes	Yes	Yes	Yes	Provider Specific	Yes
8	Data is encrypted at rest (server side)	Yes	Yes	N/A	Yes	Yes	Yes	No	Sometimes	No	Yes	Yes	No	No	Yes	Yes	No	Yes	Yes	No	Yes	No	Yes	No	Yes	Yes	Sometimes	Yes	Sometimes	Yes	Yes	No	Yes	No	No	Yes	Yes	No	Yes	No
9	Data is encrypted at rest (client side)	No	Yes	Yes	Yes	No	No	No	No	No	Yes	No	No	No	No	Yes	No	No	No	No	No	No	No	No	Yes	Yes	No	Yes	No	No	Yes	No	No	No	No	Yes	Yes	No	No	No
10	Decentralized network	No	Yes	Yes	Yes	No	No	No	No	No	No	No	Yes	No	No	Yes	No	No	No	No	No	No	Yes	Yes	No	Yes	No	Yes	No	No	No	No	No	No	No	No	No	No	Yes	No
11	Dependant on DNS	Yes	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	No	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
12	Requires global identity	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
13	Email required for signup	Yes	No	No	No	Yes	No	Yes	Yes	Yes	Yes	Yes	No	Yes	No	Provider Specific	Yes	Yes	Yes	Yes	Phone OR Email required	Yes	No	No	No	No	Phone OR Email required	No	No	Yes	No	No	Yes	Phone OR Email required	Yes	No	No	Yes	No	Yes
14	Phone required for signup	No	No	No	No	Sometimes	Yes	Yes	Yes	No	Yes	Sometimes	No	Sometimes	Yes	Provider Specific	No	No	No	No	Phone OR Email required	No	No	Yes	Yes	No	Phone OR Email required	No	Yes	No	Yes	Yes	No	Phone OR Email required	Yes	Yes	Yes	No	No	No
15	Billing details required for signup	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	Yes	No	No	No	No	No	No	Yes	No	No	No	No	No	No	No	No	No
16	App and Server are fully open source	No	Yes	Yes	Yes	No	No	No	No	No	No	No	Yes	No	No	Yes	No	No	No	No	No	Yes	Yes	No	No	Yes	No	Yes	No	No	Yes	No	No	No	No	No	Yes	No	Yes	No
17	You can verify contacts out of band	No	Yes	No	No	No	No	No	No	No	No	No	No	No	No	Yes	No	No	No	No	No	No	No	No	Yes	Yes	No	No	No	No	Yes	No	No	No	No	No	Yes	No	No	No
18	You can self-host the platform	No	Yes	Yes	Yes	No	No	No	No	No	No	No	Yes	No	No	Yes	Yes	No	No	Yes	No	Yes	No	No	Yes	Yes	No	Yes	No	No	No	No	No	No	No	No	Yes	No	Yes	No
19	Third-party clients are allowed	No	Yes	Yes	Yes	Sometimes	No	Sometimes	No	No	No	No	Yes	No	No	Yes	Yes	No	Sometimes	Yes	No	Yes	Yes	Yes	Sometimes	Yes	No	Yes	Yes	No	No	No	No	No	No	No	Yes	No	Yes	No
20	Client provides a portable database	No	Yes	Yes	Yes	No	No	No	No	No	No	No	No	No	No	No	No	No	No	Yes	No	No	No	Yes	Android Only	Yes	No	No	No	No	No	No	No	No	No	No	Yes	No	No	No
21	Client functions over overlay networks	Sometimes	Yes	Yes	Yes	No	No	No	No	No	Sometimes	No	Yes	Sometimes	Sometimes	Yes	Sometimes	No	Sometimes	Sometimes	Sometimes	No	Yes	No	Sometimes	Yes	No	Yes	Sometimes	Sometimes	No	No	No	No	No	No	Sometimes	Sometimes	Yes	No
22	There has been a third party code audit	No	Yes	No	No	No	No	Yes	No	No	Yes	No	No	No	No	Yes	No	No	No	Yes	No	No	No	No	Yes	Yes	No	Yes	No	No	Yes	No	No	No	No	No	Yes	No	No	No
23	Users must exchange phone numbers	No	No	No	No	No	No	Yes	No	No	Yes	No	No	No	No	No	No	No	Yes	No	No	No	No	Yes	Yes	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No
24	Provider can scan for illegal content	Yes	No	No	No	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	No	No	Yes	No	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes
25	Provider trains AI with user data	Yes	No	No	No	Yes	No	Yes	No	No	No	Yes	No	Yes	No	No	No	Yes	No	Yes	No	No	No	Provider Specific	No	No	Yes	No	No	Yes	No	No	No	Yes	Yes	No	No	Yes	No	Yes
26	Provider uses user data for marketing	Yes	No	No	No	Yes	No	No	No	Yes	No	Yes	No	Yes	No	No	No	Yes	Yes	Yes	No	No	No	Yes	No	No	Yes	No	No	No	No	No	No	Yes	Yes	No	No	Yes	No	No
27	Provider can shut down a community	Yes	No	No	No	Yes	Yes	No	Yes	Yes	No	Yes	Yes	Yes	Yes	Provider Specific	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	No	No	Yes	No	Yes	Yes	No	N/A	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes
28	Provider is funded by authoritarian regimes	No	No	No	No	China	No	USA	China	No	USA / China	USA	No	USA	No	Provider Specific	USA	USA	Russia	USA	USA	No	No	Regional	USA	No	USA	No	Russia	USA	No	USA	USA	USA	China	USA / India	No	USA	No	China
29	Provider actively feeds data to law enforcement	No	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Provider Specific	No	Yes	Yes	Yes	Yes	No	No	Yes	No	No	Yes	No	No	Yes	No	Yes	Yes	Yes	Yes	Yes	No	Yes	No	Yes
30	Provider complies with preservation requests	Yes	No	No	No	Yes	Yes	Yes	Yes	Yes	No	Yes	No	Yes	Yes	No	No	Yes	Yes	Yes	Yes	Yes	No	Yes	No	No	Yes	No	No	Yes	No	Yes	Yes	Yes	Yes	No	No	Yes	No	Yes
31	Client scans users photo/video library	No	No	No	No	Yes	No	No	Yes	No	Yes	Yes	No	Yes	Yes	No	No	Yes	No	Yes	No	No	No	No	No	No	Yes	No	No	Yes	No	No	No	No	Yes	No	No	No	No	Yes
32	Client removes image metadata	No	No	N/A	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	Yes	Yes	No	Yes	No	No	No	No	No	No	No	No	Yes	No	No	No
33	Linked to external account	No	No	No	No	No	No	Yes	No	No	Yes	Yes	No	No	No	No	No	Yes	No	Sometimes	Yes	No	No	Yes	No	No	No	No	No	Yes	No	No	No	Yes	No	No	No	Yes	No	No
34	Client logs users location	No	No	No	No	No	No	Yes	Yes	No	Yes	No	No	No	Yes	No	No	No	No	No	No	No	No	No	No	No	Yes	No	No	No	No	Yes	No	No	Yes	No	No	No	No	No
35	Client logs running processes	No	No	No	No	Yes	Yes	No	No	No	No	Yes	No	Yes	Yes	No	No	Yes	Yes	Yes	No	No	No	No	No	No	Yes	No	No	Yes	No	No	No	No	Yes	No	No	Yes	No	Yes
36	Can be hosted on an airgapped network	No	N/A	Yes	No	No	No	No	No	No	No	No	Yes	No	No	Yes	No	No	No	Yes	No	Yes	No	No	No	Yes	No	No	No	No	Yes	No	No	No	No	No	Yes	No	Yes	No
37	Deleted messages are removed immediately	No	Yes	N/A	Yes	No	No	No	No	Yes	Yes	No	No	No	No	Yes	No	No	No	No	No	No	No	No	Yes	Yes	No	Yes	Yes	No	Yes	No	No	No	No	No	Yes	No	Yes	No
38	Recieved messages are removed from servers	No	N/A	N/A	N/A	No	No	No	No	No	Yes	No	Yes	No	No	No	No	No	No	No	No	No	No	No	Yes	Yes	No	No	No	No	No	No	No	No	No	No	No	No	No	No
39
40	What can the apps hand to police?	This assumes that you've entered the associated info into the service if possible, otherwise marked as Not Applicable
41	IP address	Yes	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	N/A	No	No	Yes	No	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
42	Real name	Yes	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	No	No	Yes	No	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
43	Username	Yes	No	No	No	Yes	Yes	N/A	Yes	Yes	N/A	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	N/A	N/A	N/A	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	No	Yes
44	Phone number	No	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	N/A	Yes	Yes	Provider Specific	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	N/A	Yes	No	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	No	Yes	N/A	Yes
45	Email address	Yes	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	N/A	Yes	Yes	Provider Specific	Yes	Yes	Yes	Yes	Yes	Yes	No	N/A	No	N/A	Yes	No	Sometimes	Yes	No	Yes	Yes	Yes	Yes	N/A	No	Yes	N/A	Yes
46	Message contents	Yes	No	No	No	Yes	Yes	No	Yes	Yes	No	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	No	No	Yes	No	Sometimes	Yes	No	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes
47	Crypto wallets	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	No	N/A	No	N/A	N/A	No	Yes	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
48	Profile pictures	Yes	No	N/A	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	N/A	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	N/A	No	No	Yes	No	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	No	Yes	N/A	Yes
49	Account creation date	Yes	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	N/A	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	No	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	N/A	Yes
50	Account last active timestamp	Yes	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	N/A	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	N/A	Yes	No	Yes	No	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	No	Yes	N/A	Yes
51	Billing details	Yes	N/A	N/A	No	Yes	N/A	Yes	Yes	No	Yes	Yes	N/A	Yes	Yes	Provider Specific	Yes	Yes	Yes	Yes	Yes	N/A	No	Yes	No	N/A	Yes	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	N/A	Yes
52	Groups that you manage	Yes	No	No	No	Yes	Yes	No	N/A	Yes	No	Yes	Yes	Yes	Yes	Provider Specific	Yes	Yes	Yes	Yes	Yes	Yes	No	N/A	No	No	Yes	No	Yes	Yes	No	N/A	N/A	Yes	Yes	Yes	No	Yes	Yes	Yes
53	Groups that you are a member of	Yes	No	No	No	Yes	Yes	No	Yes	Yes	No	Yes	Yes	Yes	Yes	Provider Specific	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	No	No	Yes	No	No	Yes	No	N/A	N/A	Yes	Yes	No	No	Yes	Yes	Yes
54	Channels / broadcast rooms you are a member of	Yes	No	No	No	Yes	N/A	No	Yes	Yes	N/A	Yes	Yes	Yes	Yes	Provider Specific	Yes	Yes	Yes	Yes	Yes	Yes	No	N/A	N/A	No	Yes	No	Yes	Yes	No	N/A	N/A	Yes	Yes	Yes	No	N/A	Yes	Yes
55	People you talk to	Yes	No	No	No	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Provider Specific	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	No	No	Yes	No	No	Yes	No	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes
56	People you've blocked	Yes	No	No	No	Yes	Yes	No	Yes	Yes	No	Yes	N/A	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	No	No	No	No	Yes	No	No	Yes	No	Yes	Yes	Yes	Yes	No	No	Yes	N/A	Yes
57	People who have blocked you	Yes	No	No	No	Yes	Yes	Yes	Yes	Yes	No	Yes	N/A	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	No	No	No	No	Yes	No	No	Yes	No	Yes	Yes	Yes	Yes	No	No	Yes	N/A	Yes
58
59	What can an adversary find on their own?	This assumes you're using the default configuration, never intract with their sockpuppet accounts, such as adding them as a friend or sending them messages
60	IP address	No	No	Yes	No	Exploitable	No	No	Exploitable	No	No	No	Yes	No	No	No	No	No	No	Exploitable	No	No	Sometimes	N/A	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No
61	Real name	No	No	No	No	No	No	Yes	Yes	Yes	Yes	No	No	No	Yes	No	No	Yes	Yes	Yes	No	No	No	No	No	No	No	No	No	No	No	Yes	No	No	No	No	No	No	No	Yes
62	Username	Yes	No	No	No	Yes	Yes	N/A	Yes	Yes	N/A	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	N/A	N/A	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
63	Phone number	No	No	No	No	No	No	Yes	Exploitable	No	Yes	No	N/A	No	No	No	No	No	Yes	No	No	No	No	Yes	Yes	No	No	No	Sometimes	No	No	No	No	No	Yes	Yes	No	No	N/A	No
64	Email address	No	No	No	No	No	No	Yes	No	No	No	No	N/A	No	No	No	No	No	No	Yes	No	No	No	N/A	No	No	No	No	No	Yes	No	No	No	No	No	No	No	No	N/A	Yes
65	Message contents	Yes	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No
66	Crypto wallets	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	No	N/A	N/A	N/A	N/A	Sometimes	No	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
67	Profile pictures	Yes	No	N/A	No	Yes	Yes	Yes	Yes	No	No	Yes	N/A	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	N/A	No	No	Yes	Yes	Sometimes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	N/A	Yes
68	Account creation date	Yes	No	No	No	Yes	No	No	Yes	No	No	Yes	No	No	No	No	No	Yes	Yes	No	Yes	No	No	N/A	No	No	Yes	No	No	No	No	No	No	Yes	Yes	No	No	No	No	No
69	Account last active timestamp	Yes	No	No	No	No	No	No	Yes	No	No	Yes	No	No	Yes	Yes	No	Yes	No	Yes	Yes	No	No	N/A	No	No	Yes	No	Sometimes	No	No	Yes	No	No	Yes	Yes	No	Yes	No	No
70	Billing details	No	No	N/A	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No
71	Groups that you are a member of	Yes	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	Yes	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No
72	Channels / broadcast rooms you are a member of	Yes	No	No	No	Mutual	No	No	N/A	No	No	No	Yes	No	No	No	No	No	No	No	Yes	No	No	N/A	No	No	Yes	Mutual	Sometimes	No	No	No	Yes	No	No	Yes	No	No	Yes	No
73	People you talk to	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No
74	People you've blocked	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No
75	People who have blocked you	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No
76
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