"Ukraine ranked 17th on Kaspersky's list of countries with the highest percentage of computer attacks. The security company found that 47 percent of its users there [in Ukraine] faced online assaults," reads the statement.

About 34 percent of Ukraine's population, or an estimated 15.3 million people, were online last year, according to Internet World Stats.

The list of the most dangerous countries for computer attacks is based on the figures for 2012. "China and the U.S. may dominate the headlines when it comes to hacker attacks, but countries in the developing world are the most vulnerable to online assaults... When targeting consumers, cyber criminals are likely to go where there are fewer defenses. Developing markets provide such an opportunity, with millions of new Internet users every year and fewer resources to devote to security," the agency reported.

However, the U.S. was also included in the list - being put in 19th place with 45% of people who faced cyber attacks last year. About 78 percent of the U.S.'s population, or an estimated 245 million people, were online last year.

The most threatening situation in terms of computer attacks is in Russia, where 59% of Internet users faced online assaults last year. Only about 48% of Russian citizens (68 million people) were online last year.

The list of the top 20 countries where Kaspersky found the highest percentage of computers under attack in 2012 includes Russia, Tajikistan, Azerbaijan, Armenia, Kazakhstan, Belarus, Bangladesh, Sri Lanka, India, Sudan, Turkmenistan, Oman, Uzbekistan, Malaysia, Moldova, Maldives, Ukraine, Italy, the United States, and Spain.