Financial Times publisher Pearson is helping lift the media sector higher after it confirmed it is looking at possible options for its Interactive Data subsidiary, including the disposal of its majority stake.Also higher in the sector is Daily Mail publisher DMGT. UBS upgraded it to 'buy' from 'neutral', saying, 'DMGT is our preferred newspaper play given its exposure to B2B (c70% of profits), and attractive valuation.'The aerospace and defence sector is under attack, led lower by defence technology group QinetiQ, which has warned that the seasonally stronger second half will not happen this year due to a delay in orders from governments in both Britain and the US.Top performing sectors so far todayElectricity 6,790.90 +1.78%Automobiles & Parts 3,032.47 +1.65%Media 3,431.52 +1.37%General Industrials 2,291.71 +1.21%Industrial Metals 5,059.35 +1.11%Bottom performing sectors so far todayIndustrial Transportation 1,985.13 -2.88%Health Care Equipment & Services 3,541.68 -1.47%Mobile Telecommunications 3,123.52 -1.25%Aerospace and Defence 3,101.34 -1.20%Pharmaceuticals & Biotechnology 8,804.59 -1.13%