Tanium is currently valued at $3.5bn (£2.7bn) and plans to launch an initial public offering in the next 18 months.
Alex Reynolds, financial adviser at Advies Private Clients, said: "I think many firms simply do not understand the threat from cyber attacks and therefore do not know how to protect themselves."
He said cyber crime is a big risk for firms across all sectors, adding: "I don’t think we have even seen many attacks yet, but they will increase much more over the next few years."
Mr Reynolds said investment platforms are definitely a risk due to their size, but said there at least some safeguards in place to avoid disinvestment to third-party accounts.
"There should be some guidance set out for firms that deal with sensitive client information to ensure that we comply with a minimum standard, but I can’t see that happening until there are more breaches.
"Like all things, the industry should pull together to look at solutions and we need to continue to adapt to the continuing changing in technology around us which will generally mean employing or contacting specialist to protect systems and data."
katherine.denham@ft.com