Okay this is gonna be long and slightly repeating myself here. So here goes.
First, the screenshot from Sinthe:
As I have said, none of the IPs marked there are logged against Thomas' account on MTS2. Let's examine this:
mysql> select * from iplogtable left join user on (user.userid=iplogtable.userid) where iplogtable.ipaddress in ('75.168.197.143', '75.168.189.143', '78.129.197.69', '83.142.228.139', '75.168.199.213');
+--------------+----------------+----------------------------------------------------------------------------------------------------------+
| username | ipaddress | info |
+--------------+----------------+----------------------------------------------------------------------------------------------------------+
| Sinthe | 75.168.199.213 | Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4 Creative ZENcast v2.01.01 |
| Sinthe | 75.168.197.143 | Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4 |
| sherriesim | 83.142.228.139 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; FDM; ImageShack Toolbar 4.5.7) |
| Sinthe | 75.168.189.143 | Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4 |
| Adele Somers | 83.142.228.139 | Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; GTB5; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30) |
| leftywillnot | 83.142.228.139 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; FDM; ImageShack Toolbar 4.5.7) |
+--------------+----------------+----------------------------------------------------------------------------------------------------------+
Now let's examine the other IP addresses used for NaturalSims:
+------------------+---------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| username | ipaddress | info |
+------------------+---------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| xxxx | 70.85.179.186 | Mozilla/5.0 (Windows; U; Windows NT 6.0; de; rv:1.9) Gecko/2008052906 Firefox/3.0 (de) (TL-FF) |
| yyyy | 70.85.197.178 | Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9) Gecko/2008052906 Firefox/3.0 |
| yyyy | 70.85.179.186 | Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9) Gecko/2008052906 Firefox/3.0 |
| zzzz | 70.85.197.178 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; Sky Broadband; Sky Broadband) |
| aaaa | 70.85.197.178 | Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.0.3) Gecko/2008092417 Firefox/3.0.3 |
| bbbb | 70.85.179.186 | Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.5) Gecko/2008120122 Firefox/3.0.5 |
| bbbb | 70.85.179.186 | Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.5) Gecko/2008120122 Firefox/3.0.5 |
| ccccc | 70.85.197.178 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Foxy/1; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; Foxy/1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; MAXTHON 2.0) |
| dddd | 70.85.197.178 | Mozilla/5.0 (Windows; U; Windows NT 5.1; cs; rv:1.9.0.6) Gecko/2009011913 Firefox/2.0.0.3 |
| buggybooz | 70.85.179.186 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; FDM; ImageShack Toolbar 4.5.7) |
| Hamilton | 70.85.179.186 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; FDM; ImageShack Toolbar 4.5.7)
| leftywillnot | 70.85.197.178 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; FDM; ImageShack Toolbar 4.5.7) |
|
+------------------+---------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
(I've blanked out the names of the other people using these same IPs. None of them are particularly stand outworthy). The interesting ones are the ones that share the same IP and the same browser info.
Let's look at that browser string, too, since it's fairly uncommon:
+------------+----------------+-------------------------------------------------------------------------------------------------------+
| username | ipaddress | info |
+------------+----------------+-------------------------------------------------------------------------------------------------------+
| sherriesim | 87.194.217.73 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; FDM; ImageShack Toolbar 4.5.7) |
| sherriesim | 83.142.228.139 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; FDM; ImageShack Toolbar 4.5.7) |
| sherriesim | 90.212.232.224 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; FDM; ImageShack Toolbar 4.5.7) |
| buggybooz | 70.85.179.186 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; FDM; ImageShack Toolbar 4.5.7) |
| Hamilton | 70.85.179.186 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; FDM; ImageShack Toolbar 4.5.7) |
| leftywillnot | 70.85.197.178 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; FDM; ImageShack Toolbar 4.5.7) |
| leftywillnot | 83.142.228.139 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; FDM; ImageShack Toolbar 4.5.7) |
| leftywillnot | 70.85.197.178 | Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; FDM; ImageShack Toolbar 4.5.7) |
+------------+----------------+-------------------------------------------------------------------------------------------------------+
The date on the IP address usage on Thomas' MTS2 account was a few hours *after* the intrusion on buggy's account. So whoever it was logged into buggy's account *first* and then logged into Thomas' after (not the other way around). This could be for one of two reasons: Either they wanted to check everything out from a "normal" users perspective to make sure everything of buggys was gone, or they wanted to deliberately create a link between the two.
With regards to the security thing, and the timings, I do think that it's *very* suspicious that somebody would keep ahold of user account logins for *months* and not use them and then only use them now and *also*, at the end of it all, change buggys profile to a pro paysite friendly one. This last act is the one that suggests it's more personal, rather than general.
Also as an update, according to Steve they investigated the item, confirmed it was the same, and have since removed it in the past couple hours. Since I don't have a TSR account I obviously can't check.
Edited to add info from S2C.