The unfortunate news today that Hillary Clinton used a personal email address throughout her tenure as Secretary of State, and had no government email address at all, will of course play into the long running narrative about the Clintons. They act as though the rules do not apply to them.
In all likelihood, the story will not have much impact outside the Beltway unless HRC's lack of care is shown to have harmed national security or imperiled safety in fact. No doubt journalists and Republicans will be pursuing that question.
But then there's Rule 1.1's comment , amended in August 2012 to add the quoted words. As part of the duty of competence, lawyers must stay abreast of "the benefits and risks associated with relevant technology."
Maybe this rule does not apply to Secretaries of State, even those who are lawyers. But the incident offers a nice teaching moment for class.
And there's a second question: where were State's lawyers and security people during HRC's four year tenure? Did none of them see the danger and warn her? If so, how did HRC respond? If not, why not? Another subject for journalists and Republicans.