BlackBerry CEO John Chen criticizes Google's choice of  Samsung KNOX security for Android L, saying its protective layers are not sufficient.

Google's announcement at the I/O Developers Conference last month that it will integrate a part of Samsung's popular KNOX security into the next version of Android did not go down to well with BlackBerry.

The Canadian phone maker's CEO John Chen expressed his views on the new partnership between Google and Samsung, claiming the joint efforts to make Android a more secure platform was insufficient for security conscious people.

"While we applaud Google and Samsung for their plans, we don't think it's enough for security-minded enterprises," Chen said in a statement. "Instead, look to companies that have literally invested three decades into advancing the twin causes of security and productivity. In other words, don't be dazzled by those who can talk the security talk. Instead look to the company that has proven repeatedly it can walk the walk."

It is unclear if Chen's outspoken words have reached Google and if the web giant might consider the indirect offer.

Chen has been continuously working to improve the ailing company's products and services. The company lost a massive market share and most of its enterprise customers. The BlackBerry platform, which offers secure means of communication, suffered a setback from giants like Google and Apple. Android and iOS dominate the smartphone market with most of the devices running on either of the platforms.

Security has long been a concern for Android, mainly because of its open source concept. Samsung offered KNOX security in its Galaxy S4 smartphone, which gave a multilayered protection to files and data. As a result, Samsung became the first company other than BlackBerry to win the trust of the US Department of Defense, which now uses smartphones with KNOX run on the military's highly confidential network.