Clinton, Rubio leading 2016 field — in website security

Hillary ClintonHillary Diane Rodham ClintonTester will endorse a 2020 candidate 'in the next week' Democratic candidates should counter Trump's foreign policy 2020 Democrats jockey over surging college costs MORE and Sen. Marco RubioMarco Antonio RubioFrustration boils over with Senate's 'legislative graveyard' Senate passes disaster aid bill after deal with Trump GOP senators work to get Trump on board with new disaster aid package MORE are leading the likely 2016 presidential field when it comes to website security, according to one analysis.

Clinton and Rubio (R-Fla.), who each announced presidential bids in the last 24 hours, won high marks from Web developer Paul Schreiber for automatically encrypting Web traffic to their campaign sites.

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Sens. Rand PaulRandal (Rand) Howard PaulO'Rourke: Trump 'provoking' war with Iran by sending troops to Middle East Overnight Defense: 1,500 troops heading to Mideast to counter Iran | Trump cites Iran tensions to push through Saudi arms sale | Senate confirms Army, Navy chiefs before weeklong recess Trump to send 1,500 troops to Middle East to counter Iran MORE (R-Ky.) and Ted CruzRafael (Ted) Edward CruzOn The Money: Conservative blocks disaster relief bill | Trade high on agenda as Trump heads to Japan | Boeing reportedly faces SEC probe over 737 Max | Study finds CEO pay rising twice as fast as worker pay Conservative blocks House passage of disaster relief bill The Hill's Morning Report — After contentious week, Trump heads for Japan MORE (R-Texas), on the other hand, do not direct users to a HTTPS-version campaign website by default.

Cruz's encrypted site also does not work without the "www" at the beginning of the address. Schreiber called this a sign that the senator's team "isn't very good" at operating online, pointing to early technical stumbles for his campaign.

Encryption adds an additional layer of security to Web browsing by ensuring that snoopers cannot monitor traffic.

Taking this step is seen as a crucial measure of an organization's seriousness online. The White House, after encrypting its own traffic last month, is pushing for all federal agencies to do the same.

"So, you want to run a country. Can you hire someone who can run a website? These days, that means all new sites, whether running the government or delivering news should be built over HTTPS," Schreiber, who works for data site FiveThirtyEight, wrote Sunday in a blog post.

The post also inventoried the content delivery networks, mail servers and other aspects of the four declared candidates' sites.

Rubio and Cruz registered their domain names through GoDaddy, Clinton used Network Solutions, while Paul used Fabulous.com, for example.