See hacking of a personal email account is altogether a different scenario than hacking a platform with open conversations such as on gov20 scenario.
Even TechCrunch was hacked a few weeks back, where there is no chance of anyone finding a credit card number. But that led to nothingness. Let's not confuse between open data of Governance and other paradigms of sensitive data such as personal email, bank account number, email id which can be used by specific interest in mind.
For example, medic spammers sell viagra and all thru email spam. And hence we saw gmail hacks and other email account hacks. In sense of gov20 security premise of this article ain't very clear. Hacking itself can be machine based, social or simply human. Each scenario is different where open data concept of Governance is likely to feel the heat. But not that opening up data would lead to more hacking than being a closed system. That comparison is flawed.
But to apply terms like "hacking" and "insecurity" prima facie is a biased approach, and calls for correction before hand. Phishing is another scenario which could be utilized without any technical hacking per se. But that doesn't mean Twitter, Facebook have failed to perform. 🙂
"The more closed you are, the higher the chance of getting hacked".
Of course this is my take,