A tangential issue: It seems almost impossible to me that the systems of tax preparation services, whether cloud-based, local software, or offline, are secure. The standard of security is, make the target more expensive to breach than it's worth to the attacker. How much would it be worth to have access to the tax returns of large swaths of the population? I don't know the answer, but I'm guessing it's easily worth b…
The answer, of course, is "it's not that secure". Now, Turbo Tax and H&R Block aren't being hacked, but breaking into their systems isn't the easy way. And like you said, attackers want to take the easy way. The easy way is to get just enough info from your targets as it takes to extract money from them. And in the past few years, e-filing fraud has skyrocketed. The mantra is "file your taxes before someone else does…
The IRS is liable for losses due to fraud, so why would I care about fraud? It's up to the IRS to secure their systems.