Table:
text: Comparison of instant messaging protocols
Table of instant messaging protocols
Table of instant messaging protocols
Protocol Creator License Transport_Layer_Security Bulletins_to_all_contacts Batch_file_sharing
Gadu-Gadu GG Network Proprietary Yes No Yes
IRC Jarkko Oikarinen Open standard Yes, depending on individual server support No No
Windows Messenger service Microsoft Proprietary (Discontinued) No Yes No
MSNP ( Windows Live Messenger , etc.) Microsoft Proprietary No No Yes
( Mumble ) Thorvald Natvig Open standard Yes No Yes
OSCAR ( AIM , ICQ ) AOL Proprietary Yes (Aim Pro, Aim Lite) No Yes
RVP ( Windows Messenger , etc.) Microsoft Proprietary (Discontinued) No No No
SIP / SIMPLE IETF Open standard Yes Yes Yes
Steam Friends Valve Corporation Proprietary Proprietary Yes No

text: Comparison of instant messaging protocols
Table of instant messaging protocols
Table of instant messaging protocols
Protocol Creator License Transport_Layer_Security Bulletins_to_all_contacts Batch_file_sharing
Skype Skype Proprietary Proprietary No Yes
TOC2 AOL Proprietary (Discontinued) No No Partial
XMPP / Jingle ( Google Talk ) Jeremie Miller , standardized via IETF Open standard Yes Yes Yes
YMSG ( Yahoo! Messenger ) Yahoo! Proprietary No Yes Yes
Zephyr Notification Service MIT Open standard No Yes No

Question: Were there any bulletins on all contacts of Microsoft created proprietary license with no transport layer of security compared to instant messaging protocols?