Government officials are working with the campaigns to tighten security as the race for the White House intensifies.
The activity follows a pattern set in the last two presidential elections. Hacking was rampant in 2008, according to US intelligence officials, and both President Barack Obama and Mitt Romney were targets of Chinese cyberattacks four years later.
Despite that history, cyber experts say neither Donald Trump's nor Hillary Clinton's campaign networks are secure enough to eliminate the risk.
Of the attacks, Clapper predicted, "we'll probably have more."
The revelation comes after a Clapper's office released a document earlier this month saying foreign intelligence services tracked the 2008 presidential election cycle "like no other."
The document was part of a slide show used to warn incoming Obama administration officials that their new jobs could make them prey for foreign spies.
Jonathan Lampe with InfoSec Institute, a private information security company in Chicago, said security hasn't improved significantly since then.
In October, he evaluated the security of sixteen candidates' websites and wrote a pair of 20-page reports.
Using the reconnaissance skills of a casual hacker, Lampe pulled full lists of site user names and technologies used on most sites. In some cases, he discovered which directories were accessible from the Internet and which weren't. He learned what software products Hillary Clinton campaign's used from a job posting soliciting a computer-wise staffer.
But countries are probably still snooping, he said: "The sites were open enough back in October that anyone who grabbed the information then and wanted to use it, could still use it now.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
