من طرف 
avast! 4.8.1351
برنامج avast! 4 Professional Edition افضل برنامج حماية من الفيروسات على الإطلاق معه احمي جهازك وملفاتك الثمينة من الفيروسات فقد حصل على جائزة افضل برنامج حماية
هذا ولا ننسى الاصدار الاحترافي هذا
avast! 4 Professional Edition is a collection of award winning, high-end technologies that work in perfect synergy, having one common goal: to protect your system and valuable data against computer viruses, spyware and rootkits. It represents a best-in-class solution for any Windows-based workstation.
Changes in Version 4.8.1351
* improvements in some unpackers (WinExec, Installers, Droppers)
* various fixes and improvements in the scanning engine
* Standard Shield: stability improvements in the kernel-mode drivers
* preparations for smoother migration to v5 (when it's released)
Features
• Antivirus kernel
• Anti-spyware built-in
• Anti-rootkit built-in
• Strong self-protection
• Simple User Interface
• Enhanced User Interface
• Resident protection
• Script Blocker (Professional Edition only)
• P2P and IM Shields
• Network Shield
• Web Shield
• Automatic updates
• PUSH updates
• Virus Chest
• System integration
• Command-line scanner
• Integrated Virus Cleaner
• Support for 64-bit Windows / Vista
• Internationalization
Size: 36.2 MB
تاريخ اصدار البرنامج
August 17, 2009
السيريال مرفق مع البرنامج
