  Searches for flavor changing neutral currents in top production and decay
using data collected by the Compact Muon Solenoid (CMS) experiment at
$\sqrt{s}$ = 7 and 8 TeV are presented, corresponding to an integrated
luminosity of around 5 fb$^{-1}$ and 20 fb$^{-1}$. FCNC searches are conducted
to probe $tqZ$, $tq\gamma$, $tqH$, and $tgq$ interactions in various channels.
By the time of the 38$^{th}$ ICHEP conference in 2016, the upper limits on
$\mathcal{B}(t \to u\gamma)$ $<$ 0.013%, $\mathcal{B}(t \to ug)$ $<$ 0.036%,
$\mathcal{B}(t \to uZ)$ $<$ 0.05% and $\mathcal{B}(t \to uH)$ $<$ 0.42% at the
95% confidence level had been obtained by the CMS collaboration.
