ICT Security
Using Email
Email is a primary source of virus infections. Open email attachments only if you know and trust the sender - and are sure you were meant to receive the file.
- Scan all attachments with an up-to-date antivirus package before opening them.
- Open attachments and downloaded files from within applications where possible.
- Be highly suspicious of attachments with multiple extensions (eg. smileyface.jpg.exe would be an executable file - not necessarily a picture of a happy person).
- Be especially cautious of attachments with the following extensions.
| ADE | Microsoft Access Project Extension |
| ADP | Microsoft Access Project |
| BAS | Visual Basic® Class Module |
| BAT | Batch File |
| CHM | Compiled HTML Help File |
| CMD | Windows NT® Command Script |
| COM | MS-DOS® Application |
| CPL | Control Panel Extension |
| CRT | Security Certificate |
| EXE | Application |
| HLP | Windows® Help File |
| HTA | HTML Applications |
| INF | Setup Information File |
| INS | Internet Communication Settings |
| ISP | Internet Communication Settings |
| JS | JScript® File |
| JSE | JScript Encoded Script File |
| LNK | Shortcut |
| MDB | Microsoft Access Application |
| MDE | Microsoft Access MDE Database |
| MSC | Microsoft Common Console Document |
| MSI | Windows Installer Package |
| MSP | Windows Installer Patch |
| MST | Visual Test Source File |
| PCD | Photo CD Image |
| PIF | Shortcut to MS-DOS Program |
| REG | Registration Entries |
| SCR | Screen Saver |
| SCT | Windows Script Component |
| SHS | Shell Scrap Object |
| URL | Internet Address (Uniform Resource Locator) |
| VB | VBScript File |
| VBE | VBScript Encoded Script File |
| VBS | VBScript Script File |
| WSC | Windows Script Component |
| WSF | Windows Script File |
| WSH | Windows Scripting Host Settings File |