Computer hackers are exploiting fears over bird flu by releasing a computer virus attached to an email passing itself off as containing avian flu information , warned spainish computer firm panda software . the virus naiva . a masquerades as a word document with email subject lines such as " outbreak in north america " and " what is avian influenza bird flu ? " , 據(jù)路透社11月1日報(bào)道,該公司在其網(wǎng)站上表示,這種名為naiva . a的病毒將自己偽裝在電子郵件附件中的word文檔中,郵件使用的標(biāo)題多與禽流感有關(guān),比如"禽流感在北美爆發(fā)"以及"什么是禽流感"等。