Voicebot survey estimates that about 77M US adults use voice assistants in their cars at least monthly, compared with 45.7M using them on smart speakers (Rani Molla/Recode)

Rani Molla / Recode: Voicebot survey estimates that about 77M US adults use voice assistants in…

DaDa, a Chinese online tutoring service that helps children aged 4 to 16 learn English from native speakers, raises $255M Series D led by Warburg Pincus (Quynh Nguyen/DealStreetAsia)

Quynh Nguyen / DealStreetAsia: DaDa, a Chinese online tutoring service that helps children aged 4 to…

Chainalysis: Bitcoin transactions on darknet markets rose throughout 2018 to an average of $2M/day, nearly double the activity measured at the start of the year (Anna Irrera/Reuters)

Anna Irrera / Reuters: Chainalysis: Bitcoin transactions on darknet markets rose throughout 2018 to an average…

Report: $5.3B was invested in cybersecurity companies in 2018, up 81% from 2016, with California alone accounting for 46% of VC investments worldwide (Zack Whittaker/TechCrunch)

Zack Whittaker / TechCrunch: Report: $5.3B was invested in cybersecurity companies in 2018, up 81% from…

Profile of angel investor and Code.org co-founder Ali Partovi, who now manages Neo, a fund that matches talented young engineers with tech industry veterans (Biz Carson/Forbes)

Biz Carson / Forbes: Profile of angel investor and Code.org co-founder Ali Partovi, who now manages…

DNC says in court filing that it was a target of a failed spearphishing campaign after the midterms; researchers: the campaign resembled Russia-linked attacks (Nicole Perlroth/New York Times)

Nicole Perlroth / New York Times: DNC says in court filing that it was a target…