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Event Viewer showing unauthorized logons?

Logonhistory

New Member
Today I just got back to my apartment from an weekend out of town. When I logged into Windows 8, I noticed that some programs were running what really shouldn't be. I checked the Event Viewer and saw a series of logon events that happened while I was not home.
Before I left for the weekend, I didn't shutdown the laptop but I closed the lid so any one wishing to use it must enter a password to login to Windows, and I am the only person that knows the password. The strange logon events recorded on Event Viewer made me suspicious of my roommates. I don't want to start questioning them at this point. Could someone help me understand what was happening to my computer when I was away? Thank you very much.
Here's the security log for when I was away:

Audit Success 2016-02-21 2:50:17 PM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-21 2:50:17 PM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-21 2:50:17 PM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-21 2:50:17 PM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-21 2:49:15 PM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-21 2:49:15 PM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-21 2:48:56 PM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-21 2:48:56 PM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-21 9:42:25 AM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-21 9:42:25 AM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-21 9:41:17 AM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-21 9:41:17 AM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-21 2:51:55 AM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-21 2:51:55 AM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-21 2:51:39 AM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-21 2:51:39 AM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-21 2:50:20 AM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-21 2:50:20 AM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-21 2:50:19 AM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-21 2:50:19 AM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-20 8:14:10 PM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-20 8:14:10 PM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-20 2:50:09 PM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-20 2:50:09 PM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-20 2:50:09 PM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-20 2:50:09 PM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-20 2:48:50 PM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-20 2:48:50 PM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-20 2:48:19 PM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-20 2:48:19 PM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-20 1:42:48 PM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-20 1:42:48 PM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-20 1:42:14 PM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-20 1:42:14 PM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-20 2:50:50 AM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-20 2:50:50 AM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-20 2:50:26 AM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-20 2:50:26 AM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-20 2:50:09 AM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-20 2:50:09 AM Microsoft Windows security auditing. 4624 Logon
Audit Success 2016-02-20 2:50:08 AM Microsoft Windows security auditing. 4672 Special Logon
Audit Success 2016-02-20 2:50:08 AM Microsoft Windows security auditing. 4624 Logon
 

My Computer

System One

  • OS
    Windows 8

derekimo

Moderator
Moderator

My Computer

System One

  • OS
    Win 10 Pro x64
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Self Built
    CPU
    Intel I5-2500K @3.3GHz
    Motherboard
    Asrock P67 Extreme4
    Memory
    16GB G.Skill Ripjaws X (4x4GB)
    Graphics Card(s)
    EVGA GeForce 750 Ti SC 2GB
    Sound Card
    ASUS Xonar DG 5.1 Channels 24-bit 96KHz PCI Interface Sound Card
    Monitor(s) Displays
    auria eq2367
    Screen Resolution
    1920 x 1080
    Hard Drives
    250GB Samsung 850 EVO SSD
    1TB WD Blue
    1TB Hitachi
    PSU
    SeaSonic X 650W 80 Plus Gold
    Case
    Corsair Obsidian 750D
    Cooling
    Corsair H60, Three 140mm case fans
    Keyboard
    Logitech Wireless Keyboard K520
    Mouse
    Logitech Wireless Mouse M310
    Internet Speed
    Wave Broadband ~ 100 dn 5 up
    Browser
    Chrome
    Antivirus
    Defender, Malwarebytes Premium
    Other Info
    Laptop specs: HP g7-1365dx /
    CPU: AMD A6-3420M APU with Radeon(tm) HD Graphics /
    RAM: Crucial 8Gb (2x4Gb) /
    SSD: Crucial M4-CT128M4SSD2 ATA Device/ FW 000F /
    GFX: AMD Radeon HD 6520G /
    OS: Windows 10 Pro x64

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