If you follow my posts, you know that on my Mom's side, I trace my family line from Kyiv. Her maiden name is Ukrainian (Ivanenko), and to this day we have many relatives living in Ukraine. That's why this tragic conflict is personal both to me and Telegram.

Some people wondered if Telegram is somehow less secure for Ukrainians, because I once lived in Russia. Let me tell these people how my career in Russia ended.

Nine years ago I was the CEO of VK, which was the largest social network in Russia and Ukraine. In 2013, the Russian security agency, FSB, demanded that I provide them the private data of the Ukrainian users of VK who were protesting against a pro-Russian President.

I refused to comply with these demands, because it would have meant a betrayal of our Ukrainian users. After that, I was fired from the company I founded and was forced to leave Russia.

I lost my company and my home, but would do it again – without hesitation. I smile with pride when I read my VK post from April 2014, which shows the scanned orders from the FSB and my trademark response to them – a dog in a hoodie.

When I defied their demands, the stakes were high for me personally. I was still living in Russia, and my team and my old company were also based in that country.

Many years have passed since then. Many things changed: I no longer live in Russia, no longer have any companies or employees there. But one thing remains the same – I stand for our users no matter what. Their right to privacy is sacred. Now – more than ever.